From cfa0738187c51eeb897133d1699b35ddd8e96fd5 Mon Sep 17 00:00:00 2001
From: RincewindsHat <12514511+RincewindsHat@users.noreply.github.com>
Date: Tue, 31 Jan 2023 15:13:12 +0100
Subject: Remove sha1 and add sha256


diff --git a/gl/Makefile.am b/gl/Makefile.am
index db12446..3865bf7 100644
--- a/gl/Makefile.am
+++ b/gl/Makefile.am
@@ -33,8 +33,9 @@
 #  --no-libtool \
 #  --macro-prefix=gl \
 #  --no-vc-files \
+#  --no-vc-files \
 #  base64 \
-#  crypto/sha1 \
+#  crypto/sha256 \
 #  dirname \
 #  environ \
 #  floorf \
@@ -272,19 +273,19 @@ EXTRA_DIST += af_alg.h sys-limits.h
 
 ## end   gnulib module crypto/af_alg
 
-## begin gnulib module crypto/sha1
+## begin gnulib module crypto/sha256
 
-libgnu_a_SOURCES += sha1-stream.c
+libgnu_a_SOURCES += sha256-stream.c
 
-## end   gnulib module crypto/sha1
+## end   gnulib module crypto/sha256
 
-## begin gnulib module crypto/sha1-buffer
+## begin gnulib module crypto/sha256-buffer
 
-libgnu_a_SOURCES += sha1.c
+libgnu_a_SOURCES += sha256.c
 
-EXTRA_DIST += gl_openssl.h sha1.h
+EXTRA_DIST += gl_openssl.h sha256.h
 
-## end   gnulib module crypto/sha1-buffer
+## end   gnulib module crypto/sha256-buffer
 
 ## begin gnulib module dirname
 
diff --git a/gl/inttypes.h b/gl/inttypes.h
new file mode 100644
index 0000000..697e00e
--- /dev/null
+++ b/gl/inttypes.h
@@ -0,0 +1,1509 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* Copyright (C) 2006-2023 Free Software Foundation, Inc.
+   Written by Paul Eggert, Bruno Haible, Derek Price.
+   This file is part of gnulib.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/*
+ * ISO C 99 <inttypes.h> for platforms that lack it.
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/inttypes.h.html>
+ */
+
+#if __GNUC__ >= 3
+#pragma GCC system_header
+#endif
+
+
+/* Include the original <inttypes.h> if it exists, and if this file
+   has not been included yet or if this file includes gnulib stdint.h
+   which in turn includes this file.
+   The include_next requires a split double-inclusion guard.  */
+#if ! defined INTTYPES_H || defined _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
+# if 1
+
+   /* Some pre-C++11 <stdint.h> implementations need this.  */
+#  if defined __cplusplus && ! defined __STDC_FORMAT_MACROS
+#   define __STDC_FORMAT_MACROS 1
+#  endif
+
+#  include_next <inttypes.h>
+
+#  define _GL_FINISHED_INCLUDING_SYSTEM_INTTYPES_H
+# endif
+#endif
+
+#if ! defined INTTYPES_H && ! defined _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H
+#define INTTYPES_H
+
+/* Include <stdint.h> or the gnulib replacement.
+   But avoid namespace pollution on glibc systems.  */
+#ifndef __GLIBC__
+# include <stdint.h>
+#endif
+/* Get CHAR_BIT, INT_MAX, LONG_MAX, etc.  */
+#include <limits.h>
+/* On mingw, __USE_MINGW_ANSI_STDIO only works if <stdio.h> is also included */
+#if defined _WIN32 && ! defined __CYGWIN__
+# include <stdio.h>
+#endif
+
+#if !(INT_MAX == 0x7fffffff && INT_MIN + INT_MAX == -1)
+# error "This file assumes that 'int' is 32-bit two's complement. Please report your platform and compiler to <bug-gnulib@gnu.org>."
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+/* C++ compatible function declaration macros.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_CXXDEFS_H
+#define _GL_CXXDEFS_H
+
+/* Begin/end the GNULIB_NAMESPACE namespace.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
+# define _GL_END_NAMESPACE }
+#else
+# define _GL_BEGIN_NAMESPACE
+# define _GL_END_NAMESPACE
+#endif
+
+/* The three most frequent use cases of these macros are:
+
+   * For providing a substitute for a function that is missing on some
+     platforms, but is declared and works fine on the platforms on which
+     it exists:
+
+       #if @GNULIB_FOO@
+       # if !@HAVE_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       # endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on all platforms,
+     but is broken/insufficient and needs to be replaced on some platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+
+   * For providing a replacement for a function that exists on some platforms
+     but is broken/insufficient and needs to be replaced on some of them and
+     is additionally either missing or undeclared on some other platforms:
+
+       #if @GNULIB_FOO@
+       # if @REPLACE_FOO@
+       #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+       #   undef foo
+       #   define foo rpl_foo
+       #  endif
+       _GL_FUNCDECL_RPL (foo, ...);
+       _GL_CXXALIAS_RPL (foo, ...);
+       # else
+       #  if !@HAVE_FOO@   or   if !@HAVE_DECL_FOO@
+       _GL_FUNCDECL_SYS (foo, ...);
+       #  endif
+       _GL_CXXALIAS_SYS (foo, ...);
+       # endif
+       _GL_CXXALIASWARN (foo);
+       #elif defined GNULIB_POSIXCHECK
+       ...
+       #endif
+*/
+
+/* _GL_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#if defined __cplusplus
+# define _GL_EXTERN_C extern "C"
+#else
+# define _GL_EXTERN_C extern
+#endif
+
+/* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes);
+   declares a replacement function, named rpl_func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \
+  _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
+#define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype rpl_func parameters_and_attributes
+
+/* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes);
+   declares the system function, named func, with the given prototype,
+   consisting of return type, parameters, and attributes.
+   Example:
+     _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...)
+                                  _GL_ARG_NONNULL ((1)));
+ */
+#define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \
+  _GL_EXTERN_C rettype func parameters_and_attributes
+
+/* _GL_CXXALIAS_RPL (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+
+   Wrapping rpl_func in an object with an inline conversion operator
+   avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#define _GL_CXXALIAS_RPL(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::rpl_func;                                  \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA (func, rettype, parameters);
+   is to be used when func is a Microsoft deprecated alias, on native Windows.
+   It declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to _func, if GNULIB_NAMESPACE is defined.
+   Example:
+     _GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
+ */
+#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
+   is like  _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
+   except that the C function rpl_func may have a slightly different
+   declaration.  A cast is used to silence the "invalid conversion" error
+   that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                                     \
+    {                                                              \
+      static const struct _gl_ ## func ## _wrapper                 \
+      {                                                            \
+        typedef rettype (*type) parameters;                        \
+                                                                   \
+        inline operator type () const                              \
+        {                                                          \
+          return reinterpret_cast<type>(::rpl_func);               \
+        }                                                          \
+      } func = {};                                                 \
+    }                                                              \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_MDA (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
+  _GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
+
+/* _GL_CXXALIAS_SYS (func, rettype, parameters);
+   declares a C++ alias called GNULIB_NAMESPACE::func
+   that redirects to the system provided function func, if GNULIB_NAMESPACE
+   is defined.
+   Example:
+     _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+
+   Wrapping func in an object with an inline conversion operator
+   avoids a reference to func unless GNULIB_NAMESPACE::func is
+   actually used in the program.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS(func,rettype,parameters)            \
+    namespace GNULIB_NAMESPACE                                \
+    {                                                         \
+      static const struct _gl_ ## func ## _wrapper            \
+      {                                                       \
+        typedef rettype (*type) parameters;                   \
+                                                              \
+        inline operator type () const                         \
+        {                                                     \
+          return ::func;                                      \
+        }                                                     \
+      } func = {};                                            \
+    }                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function func may have a slightly different declaration.
+   A cast is used to silence the "invalid conversion" error that would
+   otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    namespace GNULIB_NAMESPACE                          \
+    {                                                   \
+      static const struct _gl_ ## func ## _wrapper      \
+      {                                                 \
+        typedef rettype (*type) parameters;             \
+                                                        \
+        inline operator type () const                   \
+        {                                               \
+          return reinterpret_cast<type>(::func);        \
+        }                                               \
+      } func = {};                                      \
+    }                                                   \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2);
+   is like  _GL_CXXALIAS_SYS (func, rettype, parameters);
+   except that the C function is picked among a set of overloaded functions,
+   namely the one with rettype2 and parameters2.  Two consecutive casts
+   are used to silence the "cannot find a match" and "invalid conversion"
+   errors that would otherwise occur.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+  /* The outer cast must be a reinterpret_cast.
+     The inner cast: When the function is defined as a set of overloaded
+     functions, it works as a static_cast<>, choosing the designated variant.
+     When the function is defined as a single variant, it works as a
+     reinterpret_cast<>. The parenthesized cast syntax works both ways.  */
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    namespace GNULIB_NAMESPACE                                                \
+    {                                                                         \
+      static const struct _gl_ ## func ## _wrapper                            \
+      {                                                                       \
+        typedef rettype (*type) parameters;                                   \
+                                                                              \
+        inline operator type () const                                         \
+        {                                                                     \
+          return reinterpret_cast<type>((rettype2 (*) parameters2)(::func));  \
+        }                                                                     \
+      } func = {};                                                            \
+    }                                                                         \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#else
+# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN (func);
+   causes a warning to be emitted when ::func is used but not when
+   GNULIB_NAMESPACE::func is used.  func must be defined without overloaded
+   variants.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN(func) \
+   _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN_1(func,namespace) \
+   _GL_CXXALIASWARN_2 (func, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+    _GL_WARN_ON_USE (func, \
+                     "The symbol ::" #func " refers to the system function. " \
+                     "Use " #namespace "::" #func " instead.")
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     extern __typeof__ (func) func
+# else
+#  define _GL_CXXALIASWARN_2(func,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN(func) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+/* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes);
+   causes a warning to be emitted when the given overloaded variant of ::func
+   is used but not when GNULIB_NAMESPACE::func is used.  */
+#if defined __cplusplus && defined GNULIB_NAMESPACE
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+   _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \
+                        GNULIB_NAMESPACE)
+# define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
+   _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
+/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
+   we enable the warning only when not optimizing.  */
+# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+    _GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
+                         "The symbol ::" #func " refers to the system function. " \
+                         "Use " #namespace "::" #func " instead.")
+# else
+#  define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
+     _GL_EXTERN_C int _gl_cxxalias_dummy
+# endif
+#else
+# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
+    _GL_EXTERN_C int _gl_cxxalias_dummy
+#endif
+
+#endif /* _GL_CXXDEFS_H */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+/* A C macro for declaring that specific arguments must not be NULL.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
+   that the values passed as arguments n, ..., m must be non-NULL pointers.
+   n = 1 stands for the first argument, n = 2 for the second argument etc.  */
+#ifndef _GL_ARG_NONNULL
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
+#  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
+# else
+#  define _GL_ARG_NONNULL(params)
+# endif
+#endif
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+/* A C macro for emitting warnings if a function is used.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* _GL_WARN_ON_USE (function, "literal string") issues a declaration
+   for FUNCTION which will then trigger a compiler warning containing
+   the text of "literal string" anywhere that function is called, if
+   supported by the compiler.  If the compiler does not support this
+   feature, the macro expands to an unused extern declaration.
+
+   _GL_WARN_ON_USE_ATTRIBUTE ("literal string") expands to the
+   attribute used in _GL_WARN_ON_USE.  If the compiler does not support
+   this feature, it expands to empty.
+
+   These macros are useful for marking a function as a potential
+   portability trap, with the intent that "literal string" include
+   instructions on the replacement function that should be used
+   instead.
+   _GL_WARN_ON_USE is for functions with 'extern' linkage.
+   _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline'
+   linkage.
+
+   However, one of the reasons that a function is a portability trap is
+   if it has the wrong signature.  Declaring FUNCTION with a different
+   signature in C is a compilation error, so this macro must use the
+   same type as any existing declaration so that programs that avoid
+   the problematic FUNCTION do not fail to compile merely because they
+   included a header that poisoned the function.  But this implies that
+   _GL_WARN_ON_USE is only safe to use if FUNCTION is known to already
+   have a declaration.  Use of this macro implies that there must not
+   be any other macro hiding the declaration of FUNCTION; but
+   undefining FUNCTION first is part of the poisoning process anyway
+   (although for symbols that are provided only via a macro, the result
+   is a compilation error rather than a warning containing
+   "literal string").  Also note that in C++, it is only safe to use if
+   FUNCTION has no overloads.
+
+   For an example, it is possible to poison 'getline' by:
+   - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]],
+     [getline]) in configure.ac, which potentially defines
+     HAVE_RAW_DECL_GETLINE
+   - adding this code to a header that wraps the system <stdio.h>:
+     #undef getline
+     #if HAVE_RAW_DECL_GETLINE
+     _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but"
+       "not universally present; use the gnulib module getline");
+     #endif
+
+   It is not possible to directly poison global variables.  But it is
+   possible to write a wrapper accessor function, and poison that
+   (less common usage, like &environ, will cause a compilation error
+   rather than issue the nice warning, but the end result of informing
+   the developer about their portability problem is still achieved):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     rpl_environ (void) { return &environ; }
+     _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared");
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   or better (avoiding contradictory use of 'static' and 'extern'):
+     #if HAVE_RAW_DECL_ENVIRON
+     static char ***
+     _GL_WARN_ON_USE_ATTRIBUTE ("environ is not always properly declared")
+     rpl_environ (void) { return &environ; }
+     # undef environ
+     # define environ (*rpl_environ ())
+     #endif
+   */
+#ifndef _GL_WARN_ON_USE
+
+# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C __typeof__ (function) function __attribute__ ((__warning__ (message)))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__warning__ (message)))
+# elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C __typeof__ (function) function \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message) \
+  __attribute__ ((__diagnose_if__ (1, message, "warning")))
+# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C __typeof__ (function) function
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# else /* Unsupported.  */
+#  define _GL_WARN_ON_USE(function, message) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+#  define _GL_WARN_ON_USE_ATTRIBUTE(message)
+# endif
+#endif
+
+/* _GL_WARN_ON_USE_CXX (function, rettype_gcc, rettype_clang, parameters_and_attributes, "message")
+   is like _GL_WARN_ON_USE (function, "message"), except that in C++ mode the
+   function is declared with the given prototype, consisting of return type,
+   parameters, and attributes.
+   This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does
+   not work in this case.  */
+#ifndef _GL_WARN_ON_USE_CXX
+# if !defined __cplusplus
+#  define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+     _GL_WARN_ON_USE (function, msg)
+# else
+#  if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__)
+/* A compiler attribute is available in gcc versions 4.3.0 and later.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes \
+  __attribute__ ((__warning__ (msg)))
+#  elif __clang_major__ >= 4
+/* Another compiler attribute is available in clang.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_clang function parameters_and_attributes \
+  __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#  elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
+/* Verify the existence of the function.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+extern rettype_gcc function parameters_and_attributes
+#  else /* Unsupported.  */
+#   define _GL_WARN_ON_USE_CXX(function,rettype_gcc,rettype_clang,parameters_and_attributes,msg) \
+_GL_WARN_EXTERN_C int _gl_warn_on_use
+#  endif
+# endif
+#endif
+
+/* _GL_WARN_EXTERN_C declaration;
+   performs the declaration with C linkage.  */
+#ifndef _GL_WARN_EXTERN_C
+# if defined __cplusplus
+#  define _GL_WARN_EXTERN_C extern "C"
+# else
+#  define _GL_WARN_EXTERN_C extern
+# endif
+#endif
+
+/* 7.8.1 Macros for format specifiers */
+
+#if defined _TNS_R_TARGET
+   /* Tandem NonStop R series and compatible platforms released before
+      July 2005 support %Ld but not %lld.  */
+# define _LONG_LONG_FORMAT_PREFIX "L"
+#else
+# define _LONG_LONG_FORMAT_PREFIX "ll"
+#endif
+
+#if !defined PRId8
+# ifdef INT8_MAX
+#  define PRId8 "d"
+# endif
+#endif
+#if !defined PRIi8
+# ifdef INT8_MAX
+#  define PRIi8 "i"
+# endif
+#endif
+#if !defined PRIo8
+# ifdef UINT8_MAX
+#  define PRIo8 "o"
+# endif
+#endif
+#if !defined PRIu8
+# ifdef UINT8_MAX
+#  define PRIu8 "u"
+# endif
+#endif
+#if !defined PRIx8
+# ifdef UINT8_MAX
+#  define PRIx8 "x"
+# endif
+#endif
+#if !defined PRIX8
+# ifdef UINT8_MAX
+#  define PRIX8 "X"
+# endif
+#endif
+#if !defined PRId16
+# ifdef INT16_MAX
+#  define PRId16 "d"
+# endif
+#endif
+#if !defined PRIi16
+# ifdef INT16_MAX
+#  define PRIi16 "i"
+# endif
+#endif
+#if !defined PRIo16
+# ifdef UINT16_MAX
+#  define PRIo16 "o"
+# endif
+#endif
+#if !defined PRIu16
+# ifdef UINT16_MAX
+#  define PRIu16 "u"
+# endif
+#endif
+#if !defined PRIx16
+# ifdef UINT16_MAX
+#  define PRIx16 "x"
+# endif
+#endif
+#if !defined PRIX16
+# ifdef UINT16_MAX
+#  define PRIX16 "X"
+# endif
+#endif
+#if !defined PRId32
+# ifdef INT32_MAX
+#  define PRId32 "d"
+# endif
+#endif
+#if !defined PRIi32
+# ifdef INT32_MAX
+#  define PRIi32 "i"
+# endif
+#endif
+#if !defined PRIo32
+# ifdef UINT32_MAX
+#  define PRIo32 "o"
+# endif
+#endif
+#if !defined PRIu32
+# ifdef UINT32_MAX
+#  define PRIu32 "u"
+# endif
+#endif
+#if !defined PRIx32
+# ifdef UINT32_MAX
+#  define PRIx32 "x"
+# endif
+#endif
+#if !defined PRIX32
+# ifdef UINT32_MAX
+#  define PRIX32 "X"
+# endif
+#endif
+#ifdef INT64_MAX
+# if (0 ? defined _LP64 : defined _LP64)
+#  define _PRI64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _PRI64_PREFIX "I64"
+# elif LONG_MAX >> 30 == 1
+#  define _PRI64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined PRId64
+#  define PRId64 _PRI64_PREFIX "d"
+# endif
+# if !defined PRIi64
+#  define PRIi64 _PRI64_PREFIX "i"
+# endif
+#endif
+#ifdef UINT64_MAX
+# if (0 ? defined _LP64 : defined _LP64)
+#  define _PRIu64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _PRIu64_PREFIX "I64"
+# elif ULONG_MAX >> 31 == 1
+#  define _PRIu64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined PRIo64
+#  define PRIo64 _PRIu64_PREFIX "o"
+# endif
+# if !defined PRIu64
+#  define PRIu64 _PRIu64_PREFIX "u"
+# endif
+# if !defined PRIx64
+#  define PRIx64 _PRIu64_PREFIX "x"
+# endif
+# if !defined PRIX64
+#  define PRIX64 _PRIu64_PREFIX "X"
+# endif
+#endif
+
+#if !defined PRIdLEAST8
+# define PRIdLEAST8 "d"
+#endif
+#if !defined PRIiLEAST8
+# define PRIiLEAST8 "i"
+#endif
+#if !defined PRIoLEAST8
+# define PRIoLEAST8 "o"
+#endif
+#if !defined PRIuLEAST8
+# define PRIuLEAST8 "u"
+#endif
+#if !defined PRIxLEAST8
+# define PRIxLEAST8 "x"
+#endif
+#if !defined PRIXLEAST8
+# define PRIXLEAST8 "X"
+#endif
+#if !defined PRIdLEAST16
+# define PRIdLEAST16 "d"
+#endif
+#if !defined PRIiLEAST16
+# define PRIiLEAST16 "i"
+#endif
+#if !defined PRIoLEAST16
+# define PRIoLEAST16 "o"
+#endif
+#if !defined PRIuLEAST16
+# define PRIuLEAST16 "u"
+#endif
+#if !defined PRIxLEAST16
+# define PRIxLEAST16 "x"
+#endif
+#if !defined PRIXLEAST16
+# define PRIXLEAST16 "X"
+#endif
+#if !defined PRIdLEAST32
+# define PRIdLEAST32 "d"
+#endif
+#if !defined PRIiLEAST32
+# define PRIiLEAST32 "i"
+#endif
+#if !defined PRIoLEAST32
+# define PRIoLEAST32 "o"
+#endif
+#if !defined PRIuLEAST32
+# define PRIuLEAST32 "u"
+#endif
+#if !defined PRIxLEAST32
+# define PRIxLEAST32 "x"
+#endif
+#if !defined PRIXLEAST32
+# define PRIXLEAST32 "X"
+#endif
+#ifdef INT64_MAX
+# if !defined PRIdLEAST64
+#  define PRIdLEAST64 PRId64
+# endif
+# if !defined PRIiLEAST64
+#  define PRIiLEAST64 PRIi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined PRIoLEAST64
+#  define PRIoLEAST64 PRIo64
+# endif
+# if !defined PRIuLEAST64
+#  define PRIuLEAST64 PRIu64
+# endif
+# if !defined PRIxLEAST64
+#  define PRIxLEAST64 PRIx64
+# endif
+# if !defined PRIXLEAST64
+#  define PRIXLEAST64 PRIX64
+# endif
+#endif
+
+#if !defined PRIdFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define PRIdFAST8 PRId64
+# else
+#  define PRIdFAST8 "d"
+# endif
+#endif
+#if !defined PRIiFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define PRIiFAST8 PRIi64
+# else
+#  define PRIiFAST8 "i"
+# endif
+#endif
+#if !defined PRIoFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIoFAST8 PRIo64
+# else
+#  define PRIoFAST8 "o"
+# endif
+#endif
+#if !defined PRIuFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIuFAST8 PRIu64
+# else
+#  define PRIuFAST8 "u"
+# endif
+#endif
+#if !defined PRIxFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIxFAST8 PRIx64
+# else
+#  define PRIxFAST8 "x"
+# endif
+#endif
+#if !defined PRIXFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define PRIXFAST8 PRIX64
+# else
+#  define PRIXFAST8 "X"
+# endif
+#endif
+#if !defined PRIdFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define PRIdFAST16 PRId64
+# else
+#  define PRIdFAST16 "d"
+# endif
+#endif
+#if !defined PRIiFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define PRIiFAST16 PRIi64
+# else
+#  define PRIiFAST16 "i"
+# endif
+#endif
+#if !defined PRIoFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIoFAST16 PRIo64
+# else
+#  define PRIoFAST16 "o"
+# endif
+#endif
+#if !defined PRIuFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIuFAST16 PRIu64
+# else
+#  define PRIuFAST16 "u"
+# endif
+#endif
+#if !defined PRIxFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIxFAST16 PRIx64
+# else
+#  define PRIxFAST16 "x"
+# endif
+#endif
+#if !defined PRIXFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define PRIXFAST16 PRIX64
+# else
+#  define PRIXFAST16 "X"
+# endif
+#endif
+#if !defined PRIdFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define PRIdFAST32 PRId64
+# else
+#  define PRIdFAST32 "d"
+# endif
+#endif
+#if !defined PRIiFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define PRIiFAST32 PRIi64
+# else
+#  define PRIiFAST32 "i"
+# endif
+#endif
+#if !defined PRIoFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIoFAST32 PRIo64
+# else
+#  define PRIoFAST32 "o"
+# endif
+#endif
+#if !defined PRIuFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIuFAST32 PRIu64
+# else
+#  define PRIuFAST32 "u"
+# endif
+#endif
+#if !defined PRIxFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIxFAST32 PRIx64
+# else
+#  define PRIxFAST32 "x"
+# endif
+#endif
+#if !defined PRIXFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define PRIXFAST32 PRIX64
+# else
+#  define PRIXFAST32 "X"
+# endif
+#endif
+#ifdef INT64_MAX
+# if !defined PRIdFAST64
+#  define PRIdFAST64 PRId64
+# endif
+# if !defined PRIiFAST64
+#  define PRIiFAST64 PRIi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined PRIoFAST64
+#  define PRIoFAST64 PRIo64
+# endif
+# if !defined PRIuFAST64
+#  define PRIuFAST64 PRIu64
+# endif
+# if !defined PRIxFAST64
+#  define PRIxFAST64 PRIx64
+# endif
+# if !defined PRIXFAST64
+#  define PRIXFAST64 PRIX64
+# endif
+#endif
+
+#if !defined PRIdMAX
+# if 1
+#  define PRIdMAX PRId64
+# else
+#  define PRIdMAX "ld"
+# endif
+#endif
+#if !defined PRIiMAX
+# if 1
+#  define PRIiMAX PRIi64
+# else
+#  define PRIiMAX "li"
+# endif
+#endif
+#if !defined PRIoMAX
+# if 1
+#  define PRIoMAX PRIo64
+# else
+#  define PRIoMAX "lo"
+# endif
+#endif
+#if !defined PRIuMAX
+# if 1
+#  define PRIuMAX PRIu64
+# else
+#  define PRIuMAX "lu"
+# endif
+#endif
+#if !defined PRIxMAX
+# if 1
+#  define PRIxMAX PRIx64
+# else
+#  define PRIxMAX "lx"
+# endif
+#endif
+#if !defined PRIXMAX
+# if 1
+#  define PRIXMAX PRIX64
+# else
+#  define PRIXMAX "lX"
+# endif
+#endif
+
+#if !defined PRIdPTR
+# ifdef INTPTR_MAX
+#  define PRIdPTR __PRIPTR_PREFIX "d"
+# endif
+#endif
+#if !defined PRIiPTR
+# ifdef INTPTR_MAX
+#  define PRIiPTR __PRIPTR_PREFIX "i"
+# endif
+#endif
+#if !defined PRIoPTR
+# ifdef UINTPTR_MAX
+#  define PRIoPTR __PRIPTR_PREFIX "o"
+# endif
+#endif
+#if !defined PRIuPTR
+# ifdef UINTPTR_MAX
+#  define PRIuPTR __PRIPTR_PREFIX "u"
+# endif
+#endif
+#if !defined PRIxPTR
+# ifdef UINTPTR_MAX
+#  define PRIxPTR __PRIPTR_PREFIX "x"
+# endif
+#endif
+#if !defined PRIXPTR
+# ifdef UINTPTR_MAX
+#  define PRIXPTR __PRIPTR_PREFIX "X"
+# endif
+#endif
+
+#if !defined SCNd8
+# ifdef INT8_MAX
+#  define SCNd8 "hhd"
+# endif
+#endif
+#if !defined SCNi8
+# ifdef INT8_MAX
+#  define SCNi8 "hhi"
+# endif
+#endif
+#if !defined SCNo8
+# ifdef UINT8_MAX
+#  define SCNo8 "hho"
+# endif
+#endif
+#if !defined SCNu8
+# ifdef UINT8_MAX
+#  define SCNu8 "hhu"
+# endif
+#endif
+#if !defined SCNx8
+# ifdef UINT8_MAX
+#  define SCNx8 "hhx"
+# endif
+#endif
+#if !defined SCNd16
+# ifdef INT16_MAX
+#  define SCNd16 "hd"
+# endif
+#endif
+#if !defined SCNi16
+# ifdef INT16_MAX
+#  define SCNi16 "hi"
+# endif
+#endif
+#if !defined SCNo16
+# ifdef UINT16_MAX
+#  define SCNo16 "ho"
+# endif
+#endif
+#if !defined SCNu16
+# ifdef UINT16_MAX
+#  define SCNu16 "hu"
+# endif
+#endif
+#if !defined SCNx16
+# ifdef UINT16_MAX
+#  define SCNx16 "hx"
+# endif
+#endif
+#if !defined SCNd32
+# ifdef INT32_MAX
+#  define SCNd32 "d"
+# endif
+#endif
+#if !defined SCNi32
+# ifdef INT32_MAX
+#  define SCNi32 "i"
+# endif
+#endif
+#if !defined SCNo32
+# ifdef UINT32_MAX
+#  define SCNo32 "o"
+# endif
+#endif
+#if !defined SCNu32
+# ifdef UINT32_MAX
+#  define SCNu32 "u"
+# endif
+#endif
+#if !defined SCNx32
+# ifdef UINT32_MAX
+#  define SCNx32 "x"
+# endif
+#endif
+#ifdef INT64_MAX
+# if (0 ? defined _LP64 : defined _LP64)
+#  define _SCN64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _SCN64_PREFIX "I64"
+# elif LONG_MAX >> 30 == 1
+#  define _SCN64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined SCNd64
+#  define SCNd64 _SCN64_PREFIX "d"
+# endif
+# if !defined SCNi64
+#  define SCNi64 _SCN64_PREFIX "i"
+# endif
+#endif
+#ifdef UINT64_MAX
+# if (0 ? defined _LP64 : defined _LP64)
+#  define _SCNu64_PREFIX "l"
+# elif defined _MSC_VER || defined __MINGW32__
+#  define _SCNu64_PREFIX "I64"
+# elif ULONG_MAX >> 31 == 1
+#  define _SCNu64_PREFIX _LONG_LONG_FORMAT_PREFIX
+# endif
+# if !defined SCNo64
+#  define SCNo64 _SCNu64_PREFIX "o"
+# endif
+# if !defined SCNu64
+#  define SCNu64 _SCNu64_PREFIX "u"
+# endif
+# if !defined SCNx64
+#  define SCNx64 _SCNu64_PREFIX "x"
+# endif
+#endif
+
+#if !defined SCNdLEAST8
+# define SCNdLEAST8 "hhd"
+#endif
+#if !defined SCNiLEAST8
+# define SCNiLEAST8 "hhi"
+#endif
+#if !defined SCNoLEAST8
+# define SCNoLEAST8 "hho"
+#endif
+#if !defined SCNuLEAST8
+# define SCNuLEAST8 "hhu"
+#endif
+#if !defined SCNxLEAST8
+# define SCNxLEAST8 "hhx"
+#endif
+#if !defined SCNdLEAST16
+# define SCNdLEAST16 "hd"
+#endif
+#if !defined SCNiLEAST16
+# define SCNiLEAST16 "hi"
+#endif
+#if !defined SCNoLEAST16
+# define SCNoLEAST16 "ho"
+#endif
+#if !defined SCNuLEAST16
+# define SCNuLEAST16 "hu"
+#endif
+#if !defined SCNxLEAST16
+# define SCNxLEAST16 "hx"
+#endif
+#if !defined SCNdLEAST32
+# define SCNdLEAST32 "d"
+#endif
+#if !defined SCNiLEAST32
+# define SCNiLEAST32 "i"
+#endif
+#if !defined SCNoLEAST32
+# define SCNoLEAST32 "o"
+#endif
+#if !defined SCNuLEAST32
+# define SCNuLEAST32 "u"
+#endif
+#if !defined SCNxLEAST32
+# define SCNxLEAST32 "x"
+#endif
+#ifdef INT64_MAX
+# if !defined SCNdLEAST64
+#  define SCNdLEAST64 SCNd64
+# endif
+# if !defined SCNiLEAST64
+#  define SCNiLEAST64 SCNi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined SCNoLEAST64
+#  define SCNoLEAST64 SCNo64
+# endif
+# if !defined SCNuLEAST64
+#  define SCNuLEAST64 SCNu64
+# endif
+# if !defined SCNxLEAST64
+#  define SCNxLEAST64 SCNx64
+# endif
+#endif
+
+#if !defined SCNdFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define SCNdFAST8 SCNd64
+# elif INT_FAST8_MAX == 0x7fff
+#  define SCNdFAST8 "hd"
+# elif INT_FAST8_MAX == 0x7f
+#  define SCNdFAST8 "hhd"
+# else
+#  define SCNdFAST8 "d"
+# endif
+#endif
+#if !defined SCNiFAST8
+# if INT_FAST8_MAX > INT32_MAX
+#  define SCNiFAST8 SCNi64
+# elif INT_FAST8_MAX == 0x7fff
+#  define SCNiFAST8 "hi"
+# elif INT_FAST8_MAX == 0x7f
+#  define SCNiFAST8 "hhi"
+# else
+#  define SCNiFAST8 "i"
+# endif
+#endif
+#if !defined SCNoFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define SCNoFAST8 SCNo64
+# elif UINT_FAST8_MAX == 0xffff
+#  define SCNoFAST8 "ho"
+# elif UINT_FAST8_MAX == 0xff
+#  define SCNoFAST8 "hho"
+# else
+#  define SCNoFAST8 "o"
+# endif
+#endif
+#if !defined SCNuFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define SCNuFAST8 SCNu64
+# elif UINT_FAST8_MAX == 0xffff
+#  define SCNuFAST8 "hu"
+# elif UINT_FAST8_MAX == 0xff
+#  define SCNuFAST8 "hhu"
+# else
+#  define SCNuFAST8 "u"
+# endif
+#endif
+#if !defined SCNxFAST8
+# if UINT_FAST8_MAX > UINT32_MAX
+#  define SCNxFAST8 SCNx64
+# elif UINT_FAST8_MAX == 0xffff
+#  define SCNxFAST8 "hx"
+# elif UINT_FAST8_MAX == 0xff
+#  define SCNxFAST8 "hhx"
+# else
+#  define SCNxFAST8 "x"
+# endif
+#endif
+#if !defined SCNdFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define SCNdFAST16 SCNd64
+# elif INT_FAST16_MAX == 0x7fff
+#  define SCNdFAST16 "hd"
+# else
+#  define SCNdFAST16 "d"
+# endif
+#endif
+#if !defined SCNiFAST16
+# if INT_FAST16_MAX > INT32_MAX
+#  define SCNiFAST16 SCNi64
+# elif INT_FAST16_MAX == 0x7fff
+#  define SCNiFAST16 "hi"
+# else
+#  define SCNiFAST16 "i"
+# endif
+#endif
+#if !defined SCNoFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define SCNoFAST16 SCNo64
+# elif UINT_FAST16_MAX == 0xffff
+#  define SCNoFAST16 "ho"
+# else
+#  define SCNoFAST16 "o"
+# endif
+#endif
+#if !defined SCNuFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define SCNuFAST16 SCNu64
+# elif UINT_FAST16_MAX == 0xffff
+#  define SCNuFAST16 "hu"
+# else
+#  define SCNuFAST16 "u"
+# endif
+#endif
+#if !defined SCNxFAST16
+# if UINT_FAST16_MAX > UINT32_MAX
+#  define SCNxFAST16 SCNx64
+# elif UINT_FAST16_MAX == 0xffff
+#  define SCNxFAST16 "hx"
+# else
+#  define SCNxFAST16 "x"
+# endif
+#endif
+#if !defined SCNdFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define SCNdFAST32 SCNd64
+# else
+#  define SCNdFAST32 "d"
+# endif
+#endif
+#if !defined SCNiFAST32
+# if INT_FAST32_MAX > INT32_MAX
+#  define SCNiFAST32 SCNi64
+# else
+#  define SCNiFAST32 "i"
+# endif
+#endif
+#if !defined SCNoFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define SCNoFAST32 SCNo64
+# else
+#  define SCNoFAST32 "o"
+# endif
+#endif
+#if !defined SCNuFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define SCNuFAST32 SCNu64
+# else
+#  define SCNuFAST32 "u"
+# endif
+#endif
+#if !defined SCNxFAST32
+# if UINT_FAST32_MAX > UINT32_MAX
+#  define SCNxFAST32 SCNx64
+# else
+#  define SCNxFAST32 "x"
+# endif
+#endif
+#ifdef INT64_MAX
+# if !defined SCNdFAST64
+#  define SCNdFAST64 SCNd64
+# endif
+# if !defined SCNiFAST64
+#  define SCNiFAST64 SCNi64
+# endif
+#endif
+#ifdef UINT64_MAX
+# if !defined SCNoFAST64
+#  define SCNoFAST64 SCNo64
+# endif
+# if !defined SCNuFAST64
+#  define SCNuFAST64 SCNu64
+# endif
+# if !defined SCNxFAST64
+#  define SCNxFAST64 SCNx64
+# endif
+#endif
+
+#if !defined SCNdMAX
+# if 1
+#  define SCNdMAX SCNd64
+# else
+#  define SCNdMAX "ld"
+# endif
+#endif
+#if !defined SCNiMAX
+# if 1
+#  define SCNiMAX SCNi64
+# else
+#  define SCNiMAX "li"
+# endif
+#endif
+#if !defined SCNoMAX
+# if 1
+#  define SCNoMAX SCNo64
+# else
+#  define SCNoMAX "lo"
+# endif
+#endif
+#if !defined SCNuMAX
+# if 1
+#  define SCNuMAX SCNu64
+# else
+#  define SCNuMAX "lu"
+# endif
+#endif
+#if !defined SCNxMAX
+# if 1
+#  define SCNxMAX SCNx64
+# else
+#  define SCNxMAX "lx"
+# endif
+#endif
+
+#if !defined SCNdPTR
+# ifdef INTPTR_MAX
+#  define SCNdPTR __PRIPTR_PREFIX "d"
+# endif
+#endif
+#if !defined SCNiPTR
+# ifdef INTPTR_MAX
+#  define SCNiPTR __PRIPTR_PREFIX "i"
+# endif
+#endif
+#if !defined SCNoPTR
+# ifdef UINTPTR_MAX
+#  define SCNoPTR __PRIPTR_PREFIX "o"
+# endif
+#endif
+#if !defined SCNuPTR
+# ifdef UINTPTR_MAX
+#  define SCNuPTR __PRIPTR_PREFIX "u"
+# endif
+#endif
+#if !defined SCNxPTR
+# ifdef UINTPTR_MAX
+#  define SCNxPTR __PRIPTR_PREFIX "x"
+# endif
+#endif
+
+/* 7.8.2 Functions for greatest-width integer types */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if 0
+# if !1
+extern intmax_t imaxabs (intmax_t);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef imaxabs
+# if HAVE_RAW_DECL_IMAXABS
+_GL_WARN_ON_USE (imaxabs, "imaxabs is unportable - "
+                 "use gnulib module imaxabs for portability");
+# endif
+#endif
+
+#if 0
+# if !1
+#  if !GNULIB_defined_imaxdiv_t
+typedef struct { intmax_t quot; intmax_t rem; } imaxdiv_t;
+#   define GNULIB_defined_imaxdiv_t 1
+#  endif
+# endif
+# if !1
+extern imaxdiv_t imaxdiv (intmax_t, intmax_t);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef imaxdiv
+# if HAVE_RAW_DECL_IMAXDIV
+_GL_WARN_ON_USE (imaxdiv, "imaxdiv is unportable - "
+                 "use gnulib module imaxdiv for portability");
+# endif
+#endif
+
+#if 0
+# if 0
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strtoimax
+#   define strtoimax rpl_strtoimax
+#  endif
+_GL_FUNCDECL_RPL (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int));
+# else
+#  if !1
+#   undef strtoimax
+_GL_FUNCDECL_SYS (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtoimax, intmax_t,
+                  (const char *restrict, char **restrict, int));
+# endif
+_GL_CXXALIASWARN (strtoimax);
+#elif defined GNULIB_POSIXCHECK
+# undef strtoimax
+# if HAVE_RAW_DECL_STRTOIMAX
+_GL_WARN_ON_USE (strtoimax, "strtoimax is unportable - "
+                 "use gnulib module strtoimax for portability");
+# endif
+#endif
+
+#if 0
+# if 0
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef strtoumax
+#   define strtoumax rpl_strtoumax
+#  endif
+_GL_FUNCDECL_RPL (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int));
+# else
+#  if !1
+#   undef strtoumax
+_GL_FUNCDECL_SYS (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int)
+                  _GL_ARG_NONNULL ((1)));
+#  endif
+_GL_CXXALIAS_SYS (strtoumax, uintmax_t,
+                  (const char *restrict, char **restrict, int));
+# endif
+_GL_CXXALIASWARN (strtoumax);
+#elif defined GNULIB_POSIXCHECK
+# undef strtoumax
+# if HAVE_RAW_DECL_STRTOUMAX
+_GL_WARN_ON_USE (strtoumax, "strtoumax is unportable - "
+                 "use gnulib module strtoumax for portability");
+# endif
+#endif
+
+/* Don't bother defining or declaring wcstoimax and wcstoumax, since
+   wide-character functions like this are hardly ever useful.  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !defined INTTYPES_H && !defined _GL_JUST_INCLUDE_SYSTEM_INTTYPES_H */
diff --git a/gl/limits.h b/gl/limits.h
new file mode 100644
index 0000000..1da08b8
--- /dev/null
+++ b/gl/limits.h
@@ -0,0 +1,132 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* A GNU-like <limits.h>.
+
+   Copyright 2016-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#if __GNUC__ >= 3
+#pragma GCC system_header
+#endif
+
+
+#if defined _GL_ALREADY_INCLUDING_LIMITS_H
+/* Special invocation convention:
+   On Haiku/x86_64, we have a sequence of nested includes
+   <limits.h> -> <syslimits.h> -> <limits.h>.
+   In this situation, LONG_MAX and INT_MAX are not yet defined,
+   therefore we should not attempt to define LONG_BIT.  */
+
+#include_next <limits.h>
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _GL_LIMITS_H
+
+# define _GL_ALREADY_INCLUDING_LIMITS_H
+
+/* The include_next requires a split double-inclusion guard.  */
+# include_next <limits.h>
+
+# undef _GL_ALREADY_INCLUDING_LIMITS_H
+
+#ifndef _GL_LIMITS_H
+#define _GL_LIMITS_H
+
+#ifndef LLONG_MIN
+# if defined LONG_LONG_MIN /* HP-UX 11.31 */
+#  define LLONG_MIN LONG_LONG_MIN
+# elif defined LONGLONG_MIN /* IRIX 6.5 */
+#  define LLONG_MIN LONGLONG_MIN
+# elif defined __GNUC__
+#  define LLONG_MIN (- __LONG_LONG_MAX__ - 1LL)
+# endif
+#endif
+#ifndef LLONG_MAX
+# if defined LONG_LONG_MAX /* HP-UX 11.31 */
+#  define LLONG_MAX LONG_LONG_MAX
+# elif defined LONGLONG_MAX /* IRIX 6.5 */
+#  define LLONG_MAX LONGLONG_MAX
+# elif defined __GNUC__
+#  define LLONG_MAX __LONG_LONG_MAX__
+# endif
+#endif
+#ifndef ULLONG_MAX
+# if defined ULONG_LONG_MAX /* HP-UX 11.31 */
+#  define ULLONG_MAX ULONG_LONG_MAX
+# elif defined ULONGLONG_MAX /* IRIX 6.5 */
+#  define ULLONG_MAX ULONGLONG_MAX
+# elif defined __GNUC__
+#  define ULLONG_MAX (__LONG_LONG_MAX__ * 2ULL + 1ULL)
+# endif
+#endif
+
+/* The number of usable bits in an unsigned or signed integer type
+   with minimum value MIN and maximum value MAX, as an int expression
+   suitable in #if.  Cover all known practical hosts.  This
+   implementation exploits the fact that MAX is 1 less than a power of
+   2, and merely counts the number of 1 bits in MAX; "COBn" means
+   "count the number of 1 bits in the low-order n bits").  */
+#define _GL_INTEGER_WIDTH(min, max) (((min) < 0) + _GL_COB128 (max))
+#define _GL_COB128(n) (_GL_COB64 ((n) >> 31 >> 31 >> 2) + _GL_COB64 (n))
+#define _GL_COB64(n) (_GL_COB32 ((n) >> 31 >> 1) + _GL_COB32 (n))
+#define _GL_COB32(n) (_GL_COB16 ((n) >> 16) + _GL_COB16 (n))
+#define _GL_COB16(n) (_GL_COB8 ((n) >> 8) + _GL_COB8 (n))
+#define _GL_COB8(n) (_GL_COB4 ((n) >> 4) + _GL_COB4 (n))
+#define _GL_COB4(n) (!!((n) & 8) + !!((n) & 4) + !!((n) & 2) + !!((n) & 1))
+
+#ifndef WORD_BIT
+/* Assume 'int' is 32 bits wide.  */
+# define WORD_BIT 32
+#endif
+#ifndef LONG_BIT
+/* Assume 'long' is 32 or 64 bits wide.  */
+# if LONG_MAX == INT_MAX
+#  define LONG_BIT 32
+# else
+#  define LONG_BIT 64
+# endif
+#endif
+
+/* Macros specified by C23 and by ISO/IEC TS 18661-1:2014.  */
+
+#if (! defined ULLONG_WIDTH                                             \
+     && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__ \
+         || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__)))
+# define CHAR_WIDTH _GL_INTEGER_WIDTH (CHAR_MIN, CHAR_MAX)
+# define SCHAR_WIDTH _GL_INTEGER_WIDTH (SCHAR_MIN, SCHAR_MAX)
+# define UCHAR_WIDTH _GL_INTEGER_WIDTH (0, UCHAR_MAX)
+# define SHRT_WIDTH _GL_INTEGER_WIDTH (SHRT_MIN, SHRT_MAX)
+# define USHRT_WIDTH _GL_INTEGER_WIDTH (0, USHRT_MAX)
+# define INT_WIDTH _GL_INTEGER_WIDTH (INT_MIN, INT_MAX)
+# define UINT_WIDTH _GL_INTEGER_WIDTH (0, UINT_MAX)
+# define LONG_WIDTH _GL_INTEGER_WIDTH (LONG_MIN, LONG_MAX)
+# define ULONG_WIDTH _GL_INTEGER_WIDTH (0, ULONG_MAX)
+# define LLONG_WIDTH _GL_INTEGER_WIDTH (LLONG_MIN, LLONG_MAX)
+# define ULLONG_WIDTH _GL_INTEGER_WIDTH (0, ULLONG_MAX)
+#endif
+
+/* Macros specified by C23.  */
+
+#if (! defined BOOL_WIDTH \
+     && (defined _GNU_SOURCE \
+         || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__)))
+# define BOOL_MAX 1
+# define BOOL_WIDTH 1
+#endif
+
+#endif /* _GL_LIMITS_H */
+#endif /* _GL_LIMITS_H */
+#endif
diff --git a/gl/m4/gnulib-cache.m4 b/gl/m4/gnulib-cache.m4
index ee4756e..4e5055e 100644
--- a/gl/m4/gnulib-cache.m4
+++ b/gl/m4/gnulib-cache.m4
@@ -38,8 +38,9 @@
 #  --no-libtool \
 #  --macro-prefix=gl \
 #  --no-vc-files \
+#  --no-vc-files \
 #  base64 \
-#  crypto/sha1 \
+#  crypto/sha256 \
 #  dirname \
 #  environ \
 #  floorf \
@@ -64,8 +65,9 @@
 # Specification in the form of a few gnulib-tool.m4 macro invocations:
 gl_LOCAL_DIR([])
 gl_MODULES([
+  --no-vc-files
   base64
-  crypto/sha1
+  crypto/sha256
   dirname
   environ
   floorf
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index 644b916..e6501b9 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -58,8 +58,8 @@ AC_DEFUN([gl_EARLY],
   # Code from module cloexec:
   # Code from module close:
   # Code from module crypto/af_alg:
-  # Code from module crypto/sha1:
-  # Code from module crypto/sha1-buffer:
+  # Code from module crypto/sha256:
+  # Code from module crypto/sha256-buffer:
   # Code from module dirname:
   # Code from module dirname-lgpl:
   # Code from module double-slash-root:
@@ -268,7 +268,7 @@ AC_DEFUN([gl_INIT],
   gl_UNISTD_MODULE_INDICATOR([close])
   gl_AF_ALG
   AC_REQUIRE([AC_C_RESTRICT])
-  gl_SHA1
+  gl_SHA256
   gl_MODULE_INDICATOR([dirname])
   gl_DOUBLE_SLASH_ROOT
   gl_FUNC_DUP2
@@ -1132,9 +1132,9 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/setlocale-lock.c
   lib/setlocale_null.c
   lib/setlocale_null.h
-  lib/sha1-stream.c
-  lib/sha1.c
-  lib/sha1.h
+  lib/sha256-stream.c
+  lib/sha256.c
+  lib/sha256.h
   lib/size_max.h
   lib/snprintf.c
   lib/sockets.c
@@ -1319,7 +1319,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/servent.m4
   m4/setenv.m4
   m4/setlocale_null.m4
-  m4/sha1.m4
+  m4/sha256.m4
   m4/size_max.m4
   m4/snprintf.m4
   m4/socketlib.m4
diff --git a/gl/m4/sha1.m4 b/gl/m4/sha1.m4
deleted file mode 100644
index 16b79c0..0000000
--- a/gl/m4/sha1.m4
+++ /dev/null
@@ -1,14 +0,0 @@
-# sha1.m4 serial 12
-dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-AC_DEFUN([gl_SHA1],
-[
-  dnl Prerequisites of lib/sha1.c.
-  AC_REQUIRE([gl_BIGENDIAN])
-
-  dnl Determine HAVE_OPENSSL_SHA1 and LIB_CRYPTO
-  gl_CRYPTO_CHECK([SHA1])
-])
diff --git a/gl/m4/sha256.m4 b/gl/m4/sha256.m4
new file mode 100644
index 0000000..4d1d1dd
--- /dev/null
+++ b/gl/m4/sha256.m4
@@ -0,0 +1,14 @@
+# sha256.m4 serial 8
+dnl Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_SHA256],
+[
+  dnl Prerequisites of lib/sha256.c.
+  AC_REQUIRE([gl_BIGENDIAN])
+
+  dnl Determine HAVE_OPENSSL_SHA256 and LIB_CRYPTO
+  gl_CRYPTO_CHECK([SHA256])
+])
diff --git a/gl/malloc/.deps/.dirstamp b/gl/malloc/.deps/.dirstamp
new file mode 100644
index 0000000..e69de29
diff --git a/gl/malloc/.deps/libgnu_a-dynarray-skeleton.Po b/gl/malloc/.deps/libgnu_a-dynarray-skeleton.Po
new file mode 100644
index 0000000..9ce06a8
--- /dev/null
+++ b/gl/malloc/.deps/libgnu_a-dynarray-skeleton.Po
@@ -0,0 +1 @@
+# dummy
diff --git a/gl/malloc/.deps/libgnu_a-dynarray_at_failure.Po b/gl/malloc/.deps/libgnu_a-dynarray_at_failure.Po
new file mode 100644
index 0000000..4902a8d
--- /dev/null
+++ b/gl/malloc/.deps/libgnu_a-dynarray_at_failure.Po
@@ -0,0 +1,142 @@
+malloc/libgnu_a-dynarray_at_failure.o: malloc/dynarray_at_failure.c \
+ /usr/include/stdc-predef.h libc-config.h ../config.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h /usr/include/assert.h \
+ /usr/include/features.h /usr/include/features-time64.h \
+ /usr/include/x86_64-linux-gnu/bits/wordsize.h \
+ /usr/include/x86_64-linux-gnu/bits/timesize.h \
+ /usr/include/x86_64-linux-gnu/sys/cdefs.h \
+ /usr/include/x86_64-linux-gnu/bits/long-double.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs-64.h /usr/include/errno.h \
+ /usr/include/x86_64-linux-gnu/bits/errno.h /usr/include/linux/errno.h \
+ /usr/include/x86_64-linux-gnu/asm/errno.h \
+ /usr/include/asm-generic/errno.h /usr/include/asm-generic/errno-base.h \
+ /usr/include/x86_64-linux-gnu/bits/types/error_t.h stdlib.h \
+ /usr/include/stdlib.h \
+ /usr/include/x86_64-linux-gnu/bits/libc-header-start.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stddef.h \
+ /usr/include/x86_64-linux-gnu/bits/waitflags.h \
+ /usr/include/x86_64-linux-gnu/bits/waitstatus.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn-common.h \
+ /usr/include/x86_64-linux-gnu/bits/types/locale_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__locale_t.h sys/types.h \
+ /usr/include/x86_64-linux-gnu/sys/types.h \
+ /usr/include/x86_64-linux-gnu/bits/types.h \
+ /usr/include/x86_64-linux-gnu/bits/typesizes.h \
+ /usr/include/x86_64-linux-gnu/bits/time64.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clock_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clockid_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/time_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/timer_t.h \
+ /usr/include/x86_64-linux-gnu/bits/stdint-intn.h /usr/include/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endianness.h \
+ /usr/include/x86_64-linux-gnu/bits/byteswap.h \
+ /usr/include/x86_64-linux-gnu/bits/uintn-identity.h \
+ /usr/include/x86_64-linux-gnu/sys/select.h \
+ /usr/include/x86_64-linux-gnu/bits/select.h \
+ /usr/include/x86_64-linux-gnu/bits/types/sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timeval.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timespec.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes.h \
+ /usr/include/x86_64-linux-gnu/bits/thread-shared-types.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes-arch.h \
+ /usr/include/x86_64-linux-gnu/bits/atomic_wide_counter.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_mutex.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_rwlock.h alloca.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-float.h dynarray.h \
+ malloc/dynarray.h string.h /usr/include/string.h strings.h \
+ /usr/include/strings.h stdio.h /usr/include/stdio.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdarg.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__fpos_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__mbstate_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__fpos64_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__FILE.h \
+ /usr/include/x86_64-linux-gnu/bits/types/FILE.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_FILE.h \
+ /usr/include/x86_64-linux-gnu/bits/types/cookie_io_functions_t.h \
+ /usr/include/x86_64-linux-gnu/bits/stdio_lim.h \
+ /usr/include/x86_64-linux-gnu/bits/stdio.h
+/usr/include/stdc-predef.h:
+libc-config.h:
+../config.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h:
+/usr/include/assert.h:
+/usr/include/features.h:
+/usr/include/features-time64.h:
+/usr/include/x86_64-linux-gnu/bits/wordsize.h:
+/usr/include/x86_64-linux-gnu/bits/timesize.h:
+/usr/include/x86_64-linux-gnu/sys/cdefs.h:
+/usr/include/x86_64-linux-gnu/bits/long-double.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs-64.h:
+/usr/include/errno.h:
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diff --git a/gl/malloc/.deps/libgnu_a-dynarray_emplace_enlarge.Po b/gl/malloc/.deps/libgnu_a-dynarray_emplace_enlarge.Po
new file mode 100644
index 0000000..be7a9eb
--- /dev/null
+++ b/gl/malloc/.deps/libgnu_a-dynarray_emplace_enlarge.Po
@@ -0,0 +1,142 @@
+malloc/libgnu_a-dynarray_emplace_enlarge.o: \
+ malloc/dynarray_emplace_enlarge.c /usr/include/stdc-predef.h \
+ libc-config.h ../config.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h /usr/include/assert.h \
+ /usr/include/features.h /usr/include/features-time64.h \
+ /usr/include/x86_64-linux-gnu/bits/wordsize.h \
+ /usr/include/x86_64-linux-gnu/bits/timesize.h \
+ /usr/include/x86_64-linux-gnu/sys/cdefs.h \
+ /usr/include/x86_64-linux-gnu/bits/long-double.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs-64.h /usr/include/errno.h \
+ /usr/include/x86_64-linux-gnu/bits/errno.h /usr/include/linux/errno.h \
+ /usr/include/x86_64-linux-gnu/asm/errno.h \
+ /usr/include/asm-generic/errno.h /usr/include/asm-generic/errno-base.h \
+ /usr/include/x86_64-linux-gnu/bits/types/error_t.h dynarray.h \
+ malloc/dynarray.h /usr/lib/gcc/x86_64-linux-gnu/12/include/stddef.h \
+ string.h /usr/include/string.h \
+ /usr/include/x86_64-linux-gnu/bits/libc-header-start.h \
+ /usr/include/x86_64-linux-gnu/bits/types/locale_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__locale_t.h strings.h \
+ /usr/include/strings.h intprops.h intprops-internal.h limits.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/limits.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/syslimits.h \
+ /usr/include/limits.h /usr/include/x86_64-linux-gnu/bits/posix1_lim.h \
+ /usr/include/x86_64-linux-gnu/bits/local_lim.h \
+ /usr/include/linux/limits.h \
+ /usr/include/x86_64-linux-gnu/bits/pthread_stack_min-dynamic.h \
+ /usr/include/x86_64-linux-gnu/bits/posix2_lim.h \
+ /usr/include/x86_64-linux-gnu/bits/xopen_lim.h \
+ /usr/include/x86_64-linux-gnu/bits/uio_lim.h stdlib.h \
+ /usr/include/stdlib.h /usr/include/x86_64-linux-gnu/bits/waitflags.h \
+ /usr/include/x86_64-linux-gnu/bits/waitstatus.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn-common.h sys/types.h \
+ /usr/include/x86_64-linux-gnu/sys/types.h \
+ /usr/include/x86_64-linux-gnu/bits/types.h \
+ /usr/include/x86_64-linux-gnu/bits/typesizes.h \
+ /usr/include/x86_64-linux-gnu/bits/time64.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clock_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clockid_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/time_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/timer_t.h \
+ /usr/include/x86_64-linux-gnu/bits/stdint-intn.h /usr/include/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endianness.h \
+ /usr/include/x86_64-linux-gnu/bits/byteswap.h \
+ /usr/include/x86_64-linux-gnu/bits/uintn-identity.h \
+ /usr/include/x86_64-linux-gnu/sys/select.h \
+ /usr/include/x86_64-linux-gnu/bits/select.h \
+ /usr/include/x86_64-linux-gnu/bits/types/sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timeval.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timespec.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes.h \
+ /usr/include/x86_64-linux-gnu/bits/thread-shared-types.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes-arch.h \
+ /usr/include/x86_64-linux-gnu/bits/atomic_wide_counter.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_mutex.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_rwlock.h alloca.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-float.h
+/usr/include/stdc-predef.h:
+libc-config.h:
+../config.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h:
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+/usr/include/x86_64-linux-gnu/bits/long-double.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs-64.h:
+/usr/include/errno.h:
+/usr/include/x86_64-linux-gnu/bits/errno.h:
+/usr/include/linux/errno.h:
+/usr/include/x86_64-linux-gnu/asm/errno.h:
+/usr/include/asm-generic/errno.h:
+/usr/include/asm-generic/errno-base.h:
+/usr/include/x86_64-linux-gnu/bits/types/error_t.h:
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+malloc/dynarray.h:
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+/usr/include/x86_64-linux-gnu/bits/xopen_lim.h:
+/usr/include/x86_64-linux-gnu/bits/uio_lim.h:
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+/usr/include/x86_64-linux-gnu/bits/struct_mutex.h:
+/usr/include/x86_64-linux-gnu/bits/struct_rwlock.h:
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+/usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h:
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diff --git a/gl/malloc/.deps/libgnu_a-dynarray_finalize.Po b/gl/malloc/.deps/libgnu_a-dynarray_finalize.Po
new file mode 100644
index 0000000..0c9dc34
--- /dev/null
+++ b/gl/malloc/.deps/libgnu_a-dynarray_finalize.Po
@@ -0,0 +1,119 @@
+malloc/libgnu_a-dynarray_finalize.o: malloc/dynarray_finalize.c \
+ /usr/include/stdc-predef.h libc-config.h ../config.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h /usr/include/assert.h \
+ /usr/include/features.h /usr/include/features-time64.h \
+ /usr/include/x86_64-linux-gnu/bits/wordsize.h \
+ /usr/include/x86_64-linux-gnu/bits/timesize.h \
+ /usr/include/x86_64-linux-gnu/sys/cdefs.h \
+ /usr/include/x86_64-linux-gnu/bits/long-double.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs-64.h /usr/include/errno.h \
+ /usr/include/x86_64-linux-gnu/bits/errno.h /usr/include/linux/errno.h \
+ /usr/include/x86_64-linux-gnu/asm/errno.h \
+ /usr/include/asm-generic/errno.h /usr/include/asm-generic/errno-base.h \
+ /usr/include/x86_64-linux-gnu/bits/types/error_t.h dynarray.h \
+ malloc/dynarray.h /usr/lib/gcc/x86_64-linux-gnu/12/include/stddef.h \
+ string.h /usr/include/string.h \
+ /usr/include/x86_64-linux-gnu/bits/libc-header-start.h \
+ /usr/include/x86_64-linux-gnu/bits/types/locale_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__locale_t.h strings.h \
+ /usr/include/strings.h stdlib.h /usr/include/stdlib.h \
+ /usr/include/x86_64-linux-gnu/bits/waitflags.h \
+ /usr/include/x86_64-linux-gnu/bits/waitstatus.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn-common.h sys/types.h \
+ /usr/include/x86_64-linux-gnu/sys/types.h \
+ /usr/include/x86_64-linux-gnu/bits/types.h \
+ /usr/include/x86_64-linux-gnu/bits/typesizes.h \
+ /usr/include/x86_64-linux-gnu/bits/time64.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clock_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clockid_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/time_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/timer_t.h \
+ /usr/include/x86_64-linux-gnu/bits/stdint-intn.h /usr/include/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endianness.h \
+ /usr/include/x86_64-linux-gnu/bits/byteswap.h \
+ /usr/include/x86_64-linux-gnu/bits/uintn-identity.h \
+ /usr/include/x86_64-linux-gnu/sys/select.h \
+ /usr/include/x86_64-linux-gnu/bits/select.h \
+ /usr/include/x86_64-linux-gnu/bits/types/sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timeval.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timespec.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes.h \
+ /usr/include/x86_64-linux-gnu/bits/thread-shared-types.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes-arch.h \
+ /usr/include/x86_64-linux-gnu/bits/atomic_wide_counter.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_mutex.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_rwlock.h alloca.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-float.h
+/usr/include/stdc-predef.h:
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+../config.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h:
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+/usr/include/x86_64-linux-gnu/bits/types/struct_timespec.h:
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+/usr/include/x86_64-linux-gnu/bits/struct_mutex.h:
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diff --git a/gl/malloc/.deps/libgnu_a-dynarray_resize.Po b/gl/malloc/.deps/libgnu_a-dynarray_resize.Po
new file mode 100644
index 0000000..e738d85
--- /dev/null
+++ b/gl/malloc/.deps/libgnu_a-dynarray_resize.Po
@@ -0,0 +1,141 @@
+malloc/libgnu_a-dynarray_resize.o: malloc/dynarray_resize.c \
+ /usr/include/stdc-predef.h libc-config.h ../config.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h /usr/include/assert.h \
+ /usr/include/features.h /usr/include/features-time64.h \
+ /usr/include/x86_64-linux-gnu/bits/wordsize.h \
+ /usr/include/x86_64-linux-gnu/bits/timesize.h \
+ /usr/include/x86_64-linux-gnu/sys/cdefs.h \
+ /usr/include/x86_64-linux-gnu/bits/long-double.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs-64.h /usr/include/errno.h \
+ /usr/include/x86_64-linux-gnu/bits/errno.h /usr/include/linux/errno.h \
+ /usr/include/x86_64-linux-gnu/asm/errno.h \
+ /usr/include/asm-generic/errno.h /usr/include/asm-generic/errno-base.h \
+ /usr/include/x86_64-linux-gnu/bits/types/error_t.h dynarray.h \
+ malloc/dynarray.h /usr/lib/gcc/x86_64-linux-gnu/12/include/stddef.h \
+ string.h /usr/include/string.h \
+ /usr/include/x86_64-linux-gnu/bits/libc-header-start.h \
+ /usr/include/x86_64-linux-gnu/bits/types/locale_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__locale_t.h strings.h \
+ /usr/include/strings.h intprops.h intprops-internal.h limits.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/limits.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/syslimits.h \
+ /usr/include/limits.h /usr/include/x86_64-linux-gnu/bits/posix1_lim.h \
+ /usr/include/x86_64-linux-gnu/bits/local_lim.h \
+ /usr/include/linux/limits.h \
+ /usr/include/x86_64-linux-gnu/bits/pthread_stack_min-dynamic.h \
+ /usr/include/x86_64-linux-gnu/bits/posix2_lim.h \
+ /usr/include/x86_64-linux-gnu/bits/xopen_lim.h \
+ /usr/include/x86_64-linux-gnu/bits/uio_lim.h stdlib.h \
+ /usr/include/stdlib.h /usr/include/x86_64-linux-gnu/bits/waitflags.h \
+ /usr/include/x86_64-linux-gnu/bits/waitstatus.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn.h \
+ /usr/include/x86_64-linux-gnu/bits/floatn-common.h sys/types.h \
+ /usr/include/x86_64-linux-gnu/sys/types.h \
+ /usr/include/x86_64-linux-gnu/bits/types.h \
+ /usr/include/x86_64-linux-gnu/bits/typesizes.h \
+ /usr/include/x86_64-linux-gnu/bits/time64.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clock_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/clockid_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/time_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/timer_t.h \
+ /usr/include/x86_64-linux-gnu/bits/stdint-intn.h /usr/include/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endian.h \
+ /usr/include/x86_64-linux-gnu/bits/endianness.h \
+ /usr/include/x86_64-linux-gnu/bits/byteswap.h \
+ /usr/include/x86_64-linux-gnu/bits/uintn-identity.h \
+ /usr/include/x86_64-linux-gnu/sys/select.h \
+ /usr/include/x86_64-linux-gnu/bits/select.h \
+ /usr/include/x86_64-linux-gnu/bits/types/sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__sigset_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timeval.h \
+ /usr/include/x86_64-linux-gnu/bits/types/struct_timespec.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes.h \
+ /usr/include/x86_64-linux-gnu/bits/thread-shared-types.h \
+ /usr/include/x86_64-linux-gnu/bits/pthreadtypes-arch.h \
+ /usr/include/x86_64-linux-gnu/bits/atomic_wide_counter.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_mutex.h \
+ /usr/include/x86_64-linux-gnu/bits/struct_rwlock.h alloca.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h \
+ /usr/include/x86_64-linux-gnu/bits/stdlib-float.h
+/usr/include/stdc-predef.h:
+libc-config.h:
+../config.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h:
+/usr/include/assert.h:
+/usr/include/features.h:
+/usr/include/features-time64.h:
+/usr/include/x86_64-linux-gnu/bits/wordsize.h:
+/usr/include/x86_64-linux-gnu/bits/timesize.h:
+/usr/include/x86_64-linux-gnu/sys/cdefs.h:
+/usr/include/x86_64-linux-gnu/bits/long-double.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs-64.h:
+/usr/include/errno.h:
+/usr/include/x86_64-linux-gnu/bits/errno.h:
+/usr/include/linux/errno.h:
+/usr/include/x86_64-linux-gnu/asm/errno.h:
+/usr/include/asm-generic/errno.h:
+/usr/include/asm-generic/errno-base.h:
+/usr/include/x86_64-linux-gnu/bits/types/error_t.h:
+dynarray.h:
+malloc/dynarray.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stddef.h:
+string.h:
+/usr/include/string.h:
+/usr/include/x86_64-linux-gnu/bits/libc-header-start.h:
+/usr/include/x86_64-linux-gnu/bits/types/locale_t.h:
+/usr/include/x86_64-linux-gnu/bits/types/__locale_t.h:
+strings.h:
+/usr/include/strings.h:
+intprops.h:
+intprops-internal.h:
+limits.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/limits.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/syslimits.h:
+/usr/include/limits.h:
+/usr/include/x86_64-linux-gnu/bits/posix1_lim.h:
+/usr/include/x86_64-linux-gnu/bits/local_lim.h:
+/usr/include/linux/limits.h:
+/usr/include/x86_64-linux-gnu/bits/pthread_stack_min-dynamic.h:
+/usr/include/x86_64-linux-gnu/bits/posix2_lim.h:
+/usr/include/x86_64-linux-gnu/bits/xopen_lim.h:
+/usr/include/x86_64-linux-gnu/bits/uio_lim.h:
+stdlib.h:
+/usr/include/stdlib.h:
+/usr/include/x86_64-linux-gnu/bits/waitflags.h:
+/usr/include/x86_64-linux-gnu/bits/waitstatus.h:
+/usr/include/x86_64-linux-gnu/bits/floatn.h:
+/usr/include/x86_64-linux-gnu/bits/floatn-common.h:
+sys/types.h:
+/usr/include/x86_64-linux-gnu/sys/types.h:
+/usr/include/x86_64-linux-gnu/bits/types.h:
+/usr/include/x86_64-linux-gnu/bits/typesizes.h:
+/usr/include/x86_64-linux-gnu/bits/time64.h:
+/usr/include/x86_64-linux-gnu/bits/types/clock_t.h:
+/usr/include/x86_64-linux-gnu/bits/types/clockid_t.h:
+/usr/include/x86_64-linux-gnu/bits/types/time_t.h:
+/usr/include/x86_64-linux-gnu/bits/types/timer_t.h:
+/usr/include/x86_64-linux-gnu/bits/stdint-intn.h:
+/usr/include/endian.h:
+/usr/include/x86_64-linux-gnu/bits/endian.h:
+/usr/include/x86_64-linux-gnu/bits/endianness.h:
+/usr/include/x86_64-linux-gnu/bits/byteswap.h:
+/usr/include/x86_64-linux-gnu/bits/uintn-identity.h:
+/usr/include/x86_64-linux-gnu/sys/select.h:
+/usr/include/x86_64-linux-gnu/bits/select.h:
+/usr/include/x86_64-linux-gnu/bits/types/sigset_t.h:
+/usr/include/x86_64-linux-gnu/bits/types/__sigset_t.h:
+/usr/include/x86_64-linux-gnu/bits/types/struct_timeval.h:
+/usr/include/x86_64-linux-gnu/bits/types/struct_timespec.h:
+/usr/include/x86_64-linux-gnu/bits/pthreadtypes.h:
+/usr/include/x86_64-linux-gnu/bits/thread-shared-types.h:
+/usr/include/x86_64-linux-gnu/bits/pthreadtypes-arch.h:
+/usr/include/x86_64-linux-gnu/bits/atomic_wide_counter.h:
+/usr/include/x86_64-linux-gnu/bits/struct_mutex.h:
+/usr/include/x86_64-linux-gnu/bits/struct_rwlock.h:
+alloca.h:
+/usr/include/x86_64-linux-gnu/bits/stdlib-bsearch.h:
+/usr/include/x86_64-linux-gnu/bits/stdlib-float.h:
diff --git a/gl/malloc/.deps/libgnu_a-dynarray_resize_clear.Po b/gl/malloc/.deps/libgnu_a-dynarray_resize_clear.Po
new file mode 100644
index 0000000..9585a04
--- /dev/null
+++ b/gl/malloc/.deps/libgnu_a-dynarray_resize_clear.Po
@@ -0,0 +1,52 @@
+malloc/libgnu_a-dynarray_resize_clear.o: malloc/dynarray_resize_clear.c \
+ /usr/include/stdc-predef.h libc-config.h ../config.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h \
+ /usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h /usr/include/assert.h \
+ /usr/include/features.h /usr/include/features-time64.h \
+ /usr/include/x86_64-linux-gnu/bits/wordsize.h \
+ /usr/include/x86_64-linux-gnu/bits/timesize.h \
+ /usr/include/x86_64-linux-gnu/sys/cdefs.h \
+ /usr/include/x86_64-linux-gnu/bits/long-double.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs.h \
+ /usr/include/x86_64-linux-gnu/gnu/stubs-64.h /usr/include/errno.h \
+ /usr/include/x86_64-linux-gnu/bits/errno.h /usr/include/linux/errno.h \
+ /usr/include/x86_64-linux-gnu/asm/errno.h \
+ /usr/include/asm-generic/errno.h /usr/include/asm-generic/errno-base.h \
+ /usr/include/x86_64-linux-gnu/bits/types/error_t.h dynarray.h \
+ malloc/dynarray.h /usr/lib/gcc/x86_64-linux-gnu/12/include/stddef.h \
+ string.h /usr/include/string.h \
+ /usr/include/x86_64-linux-gnu/bits/libc-header-start.h \
+ /usr/include/x86_64-linux-gnu/bits/types/locale_t.h \
+ /usr/include/x86_64-linux-gnu/bits/types/__locale_t.h strings.h \
+ /usr/include/strings.h
+/usr/include/stdc-predef.h:
+libc-config.h:
+../config.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdalign.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stdbool.h:
+/usr/include/assert.h:
+/usr/include/features.h:
+/usr/include/features-time64.h:
+/usr/include/x86_64-linux-gnu/bits/wordsize.h:
+/usr/include/x86_64-linux-gnu/bits/timesize.h:
+/usr/include/x86_64-linux-gnu/sys/cdefs.h:
+/usr/include/x86_64-linux-gnu/bits/long-double.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs.h:
+/usr/include/x86_64-linux-gnu/gnu/stubs-64.h:
+/usr/include/errno.h:
+/usr/include/x86_64-linux-gnu/bits/errno.h:
+/usr/include/linux/errno.h:
+/usr/include/x86_64-linux-gnu/asm/errno.h:
+/usr/include/asm-generic/errno.h:
+/usr/include/asm-generic/errno-base.h:
+/usr/include/x86_64-linux-gnu/bits/types/error_t.h:
+dynarray.h:
+malloc/dynarray.h:
+/usr/lib/gcc/x86_64-linux-gnu/12/include/stddef.h:
+string.h:
+/usr/include/string.h:
+/usr/include/x86_64-linux-gnu/bits/libc-header-start.h:
+/usr/include/x86_64-linux-gnu/bits/types/locale_t.h:
+/usr/include/x86_64-linux-gnu/bits/types/__locale_t.h:
+strings.h:
+/usr/include/strings.h:
diff --git a/gl/malloc/.dirstamp b/gl/malloc/.dirstamp
new file mode 100644
index 0000000..e69de29
diff --git a/gl/malloc/dynarray-skeleton.gl.h b/gl/malloc/dynarray-skeleton.gl.h
new file mode 100644
index 0000000..af95414
--- /dev/null
+++ b/gl/malloc/dynarray-skeleton.gl.h
@@ -0,0 +1,529 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* Type-safe arrays which grow dynamically.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* Pre-processor macros which act as parameters:
+
+   DYNARRAY_STRUCT
+      The struct tag of dynamic array to be defined.
+   DYNARRAY_ELEMENT
+      The type name of the element type.  Elements are copied
+      as if by memcpy, and can change address as the dynamic
+      array grows.
+   DYNARRAY_PREFIX
+      The prefix of the functions which are defined.
+
+   The following parameters are optional:
+
+   DYNARRAY_ELEMENT_FREE
+      DYNARRAY_ELEMENT_FREE (E) is evaluated to deallocate the
+      contents of elements. E is of type  DYNARRAY_ELEMENT *.
+   DYNARRAY_ELEMENT_INIT
+      DYNARRAY_ELEMENT_INIT (E) is evaluated to initialize a new
+      element.  E is of type  DYNARRAY_ELEMENT *.
+      If DYNARRAY_ELEMENT_FREE but not DYNARRAY_ELEMENT_INIT is
+      defined, new elements are automatically zero-initialized.
+      Otherwise, new elements have undefined contents.
+   DYNARRAY_INITIAL_SIZE
+      The size of the statically allocated array (default:
+      at least 2, more elements if they fit into 128 bytes).
+      Must be a preprocessor constant.  If DYNARRAY_INITIAL_SIZE is 0,
+      there is no statically allocated array at, and all non-empty
+      arrays are heap-allocated.
+   DYNARRAY_FINAL_TYPE
+      The name of the type which holds the final array.  If not
+      defined, is PREFIX##finalize not provided.  DYNARRAY_FINAL_TYPE
+      must be a struct type, with members of type DYNARRAY_ELEMENT and
+      size_t at the start (in this order).
+
+   These macros are undefined after this header file has been
+   included.
+
+   The following types are provided (their members are private to the
+   dynarray implementation):
+
+     struct DYNARRAY_STRUCT
+
+   The following functions are provided:
+
+     void DYNARRAY_PREFIX##init (struct DYNARRAY_STRUCT *);
+     void DYNARRAY_PREFIX##free (struct DYNARRAY_STRUCT *);
+     bool DYNARRAY_PREFIX##has_failed (const struct DYNARRAY_STRUCT *);
+     void DYNARRAY_PREFIX##mark_failed (struct DYNARRAY_STRUCT *);
+     size_t DYNARRAY_PREFIX##size (const struct DYNARRAY_STRUCT *);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##begin (const struct DYNARRAY_STRUCT *);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##end (const struct DYNARRAY_STRUCT *);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##at (struct DYNARRAY_STRUCT *, size_t);
+     void DYNARRAY_PREFIX##add (struct DYNARRAY_STRUCT *, DYNARRAY_ELEMENT);
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##emplace (struct DYNARRAY_STRUCT *);
+     bool DYNARRAY_PREFIX##resize (struct DYNARRAY_STRUCT *, size_t);
+     void DYNARRAY_PREFIX##remove_last (struct DYNARRAY_STRUCT *);
+     void DYNARRAY_PREFIX##clear (struct DYNARRAY_STRUCT *);
+
+   The following functions are provided are provided if the
+   prerequisites are met:
+
+     bool DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *,
+                                     DYNARRAY_FINAL_TYPE *);
+       (if DYNARRAY_FINAL_TYPE is defined)
+     DYNARRAY_ELEMENT *DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *,
+                                                  size_t *);
+       (if DYNARRAY_FINAL_TYPE is not defined)
+*/
+
+#include <malloc/dynarray.gl.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef DYNARRAY_STRUCT
+# error "DYNARRAY_STRUCT must be defined"
+#endif
+
+#ifndef DYNARRAY_ELEMENT
+# error "DYNARRAY_ELEMENT must be defined"
+#endif
+
+#ifndef DYNARRAY_PREFIX
+# error "DYNARRAY_PREFIX must be defined"
+#endif
+
+#ifdef DYNARRAY_INITIAL_SIZE
+# if DYNARRAY_INITIAL_SIZE < 0
+#  error "DYNARRAY_INITIAL_SIZE must be non-negative"
+# endif
+# if DYNARRAY_INITIAL_SIZE > 0
+#  define DYNARRAY_HAVE_SCRATCH 1
+# else
+#  define DYNARRAY_HAVE_SCRATCH 0
+# endif
+#else
+/* Provide a reasonable default which limits the size of
+   DYNARRAY_STRUCT.  */
+# define DYNARRAY_INITIAL_SIZE \
+  (sizeof (DYNARRAY_ELEMENT) > 64 ? 2 : 128 / sizeof (DYNARRAY_ELEMENT))
+# define DYNARRAY_HAVE_SCRATCH 1
+#endif
+
+/* Public type definitions.  */
+
+/* All fields of this struct are private to the implementation.  */
+struct DYNARRAY_STRUCT
+{
+  union
+  {
+    struct dynarray_header dynarray_abstract;
+    struct
+    {
+      /* These fields must match struct dynarray_header.  */
+      size_t used;
+      size_t allocated;
+      DYNARRAY_ELEMENT *array;
+    } dynarray_header;
+  } u;
+
+#if DYNARRAY_HAVE_SCRATCH
+  /* Initial inline allocation.  */
+  DYNARRAY_ELEMENT scratch[DYNARRAY_INITIAL_SIZE];
+#endif
+};
+
+/* Internal use only: Helper macros.  */
+
+/* Ensure macro-expansion of DYNARRAY_PREFIX.  */
+#define DYNARRAY_CONCAT0(prefix, name) prefix##name
+#define DYNARRAY_CONCAT1(prefix, name) DYNARRAY_CONCAT0(prefix, name)
+#define DYNARRAY_NAME(name) DYNARRAY_CONCAT1(DYNARRAY_PREFIX, name)
+
+/* Use DYNARRAY_FREE instead of DYNARRAY_NAME (free),
+   so that Gnulib does not change 'free' to 'rpl_free'.  */
+#define DYNARRAY_FREE DYNARRAY_CONCAT1 (DYNARRAY_NAME (f), ree)
+
+/* Address of the scratch buffer if any.  */
+#if DYNARRAY_HAVE_SCRATCH
+# define DYNARRAY_SCRATCH(list) (list)->scratch
+#else
+# define DYNARRAY_SCRATCH(list) NULL
+#endif
+
+/* Internal use only: Helper functions.  */
+
+/* Internal function.  Call DYNARRAY_ELEMENT_FREE with the array
+   elements.  Name mangling needed due to the DYNARRAY_ELEMENT_FREE
+   macro expansion.  */
+static inline void
+DYNARRAY_NAME (free__elements__) (DYNARRAY_ELEMENT *__dynarray_array,
+                                  size_t __dynarray_used)
+{
+#ifdef DYNARRAY_ELEMENT_FREE
+  for (size_t __dynarray_i = 0; __dynarray_i < __dynarray_used; ++__dynarray_i)
+    DYNARRAY_ELEMENT_FREE (&__dynarray_array[__dynarray_i]);
+#endif /* DYNARRAY_ELEMENT_FREE */
+}
+
+/* Internal function.  Free the non-scratch array allocation.  */
+static inline void
+DYNARRAY_NAME (free__array__) (struct DYNARRAY_STRUCT *list)
+{
+#if DYNARRAY_HAVE_SCRATCH
+  if (list->u.dynarray_header.array != list->scratch)
+    free (list->u.dynarray_header.array);
+#else
+  free (list->u.dynarray_header.array);
+#endif
+}
+
+/* Public functions.  */
+
+/* Initialize a dynamic array object.  This must be called before any
+   use of the object.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static void
+DYNARRAY_NAME (init) (struct DYNARRAY_STRUCT *list)
+{
+  list->u.dynarray_header.used = 0;
+  list->u.dynarray_header.allocated = DYNARRAY_INITIAL_SIZE;
+  list->u.dynarray_header.array = DYNARRAY_SCRATCH (list);
+}
+
+/* Deallocate the dynamic array and its elements.  */
+_GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_NONNULL ((1))
+static void
+DYNARRAY_FREE (struct DYNARRAY_STRUCT *list)
+{
+  DYNARRAY_NAME (free__elements__)
+    (list->u.dynarray_header.array, list->u.dynarray_header.used);
+  DYNARRAY_NAME (free__array__) (list);
+  DYNARRAY_NAME (init) (list);
+}
+
+/* Return true if the dynamic array is in an error state.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static inline bool
+DYNARRAY_NAME (has_failed) (const struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.allocated == __dynarray_error_marker ();
+}
+
+/* Mark the dynamic array as failed.  All elements are deallocated as
+   a side effect.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static void
+DYNARRAY_NAME (mark_failed) (struct DYNARRAY_STRUCT *list)
+{
+  DYNARRAY_NAME (free__elements__)
+    (list->u.dynarray_header.array, list->u.dynarray_header.used);
+  DYNARRAY_NAME (free__array__) (list);
+  list->u.dynarray_header.array = DYNARRAY_SCRATCH (list);
+  list->u.dynarray_header.used = 0;
+  list->u.dynarray_header.allocated = __dynarray_error_marker ();
+}
+
+/* Return the number of elements which have been added to the dynamic
+   array.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static inline size_t
+DYNARRAY_NAME (size) (const struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.used;
+}
+
+/* Return a pointer to the array element at INDEX.  Terminate the
+   process if INDEX is out of bounds.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (at) (struct DYNARRAY_STRUCT *list, size_t index)
+{
+  if (_GL_UNLIKELY (index >= DYNARRAY_NAME (size) (list)))
+    __libc_dynarray_at_failure (DYNARRAY_NAME (size) (list), index);
+  return list->u.dynarray_header.array + index;
+}
+
+/* Return a pointer to the first array element, if any.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (begin) (struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.array;
+}
+
+/* Return a pointer one element past the last array element.  For a
+   zero-length array, the pointer can be NULL even though the dynamic
+   array has not entered the failure state.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (end) (struct DYNARRAY_STRUCT *list)
+{
+  return list->u.dynarray_header.array + list->u.dynarray_header.used;
+}
+
+/* Internal function.  Slow path for the add function below.  */
+static void
+DYNARRAY_NAME (add__) (struct DYNARRAY_STRUCT *list, DYNARRAY_ELEMENT item)
+{
+  if (_GL_UNLIKELY
+      (!__libc_dynarray_emplace_enlarge (&list->u.dynarray_abstract,
+                                         DYNARRAY_SCRATCH (list),
+                                         sizeof (DYNARRAY_ELEMENT))))
+    {
+      DYNARRAY_NAME (mark_failed) (list);
+      return;
+    }
+
+  /* Copy the new element and increase the array length.  */
+  list->u.dynarray_header.array[list->u.dynarray_header.used++] = item;
+}
+
+/* Add ITEM at the end of the array, enlarging it by one element.
+   Mark *LIST as failed if the dynamic array allocation size cannot be
+   increased.  */
+_GL_ATTRIBUTE_NONNULL ((1))
+static inline void
+DYNARRAY_NAME (add) (struct DYNARRAY_STRUCT *list, DYNARRAY_ELEMENT item)
+{
+  /* Do nothing in case of previous error.  */
+  if (DYNARRAY_NAME (has_failed) (list))
+    return;
+
+  /* Enlarge the array if necessary.  */
+  if (_GL_UNLIKELY (list->u.dynarray_header.used
+                        == list->u.dynarray_header.allocated))
+    {
+      DYNARRAY_NAME (add__) (list, item);
+      return;
+    }
+
+  /* Copy the new element and increase the array length.  */
+  list->u.dynarray_header.array[list->u.dynarray_header.used++] = item;
+}
+
+/* Internal function.  Building block for the emplace functions below.
+   Assumes space for one more element in *LIST.  */
+static inline DYNARRAY_ELEMENT *
+DYNARRAY_NAME (emplace__tail__) (struct DYNARRAY_STRUCT *list)
+{
+  DYNARRAY_ELEMENT *result
+    = &list->u.dynarray_header.array[list->u.dynarray_header.used];
+  ++list->u.dynarray_header.used;
+#if defined (DYNARRAY_ELEMENT_INIT)
+  DYNARRAY_ELEMENT_INIT (result);
+#elif defined (DYNARRAY_ELEMENT_FREE)
+  memset (result, 0, sizeof (*result));
+#endif
+  return result;
+}
+
+/* Internal function.  Slow path for the emplace function below.  */
+static DYNARRAY_ELEMENT *
+DYNARRAY_NAME (emplace__) (struct DYNARRAY_STRUCT *list)
+{
+  if (_GL_UNLIKELY
+      (!__libc_dynarray_emplace_enlarge (&list->u.dynarray_abstract,
+                                         DYNARRAY_SCRATCH (list),
+                                         sizeof (DYNARRAY_ELEMENT))))
+    {
+      DYNARRAY_NAME (mark_failed) (list);
+      return NULL;
+    }
+  return DYNARRAY_NAME (emplace__tail__) (list);
+}
+
+/* Allocate a place for a new element in *LIST and return a pointer to
+   it.  The pointer can be NULL if the dynamic array cannot be
+   enlarged due to a memory allocation failure.  */
+_GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_NODISCARD
+_GL_ATTRIBUTE_NONNULL ((1))
+static
+/* Avoid inlining with the larger initialization code.  */
+#if !(defined (DYNARRAY_ELEMENT_INIT) || defined (DYNARRAY_ELEMENT_FREE))
+inline
+#endif
+DYNARRAY_ELEMENT *
+DYNARRAY_NAME (emplace) (struct DYNARRAY_STRUCT *list)
+{
+  /* Do nothing in case of previous error.  */
+  if (DYNARRAY_NAME (has_failed) (list))
+    return NULL;
+
+  /* Enlarge the array if necessary.  */
+  if (_GL_UNLIKELY (list->u.dynarray_header.used
+                        == list->u.dynarray_header.allocated))
+    return (DYNARRAY_NAME (emplace__) (list));
+  return DYNARRAY_NAME (emplace__tail__) (list);
+}
+
+/* Change the size of *LIST to SIZE.  If SIZE is larger than the
+   existing size, new elements are added (which can be initialized).
+   Otherwise, the list is truncated, and elements are freed.  Return
+   false on memory allocation failure (and mark *LIST as failed).  */
+_GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_NONNULL ((1))
+static bool
+DYNARRAY_NAME (resize) (struct DYNARRAY_STRUCT *list, size_t size)
+{
+  if (size > list->u.dynarray_header.used)
+    {
+      bool ok;
+#if defined (DYNARRAY_ELEMENT_INIT)
+      /* The new elements have to be initialized.  */
+      size_t old_size = list->u.dynarray_header.used;
+      ok = __libc_dynarray_resize (&list->u.dynarray_abstract,
+                                   size, DYNARRAY_SCRATCH (list),
+                                   sizeof (DYNARRAY_ELEMENT));
+      if (ok)
+        for (size_t i = old_size; i < size; ++i)
+          {
+            DYNARRAY_ELEMENT_INIT (&list->u.dynarray_header.array[i]);
+          }
+#elif defined (DYNARRAY_ELEMENT_FREE)
+      /* Zero initialization is needed so that the elements can be
+         safely freed.  */
+      ok = __libc_dynarray_resize_clear
+        (&list->u.dynarray_abstract, size,
+         DYNARRAY_SCRATCH (list), sizeof (DYNARRAY_ELEMENT));
+#else
+      ok =  __libc_dynarray_resize (&list->u.dynarray_abstract,
+                                    size, DYNARRAY_SCRATCH (list),
+                                    sizeof (DYNARRAY_ELEMENT));
+#endif
+      if (_GL_UNLIKELY (!ok))
+        DYNARRAY_NAME (mark_failed) (list);
+      return ok;
+    }
+  else
+    {
+      /* The list has shrunk in size.  Free the removed elements.  */
+      DYNARRAY_NAME (free__elements__)
+        (list->u.dynarray_header.array + size,
+         list->u.dynarray_header.used - size);
+      list->u.dynarray_header.used = size;
+      return true;
+    }
+}
+
+/* Remove the last element of LIST if it is present.  */
+_GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_NONNULL ((1))
+static void
+DYNARRAY_NAME (remove_last) (struct DYNARRAY_STRUCT *list)
+{
+  /* used > 0 implies that the array is the non-failed state.  */
+  if (list->u.dynarray_header.used > 0)
+    {
+      size_t new_length = list->u.dynarray_header.used - 1;
+#ifdef DYNARRAY_ELEMENT_FREE
+      DYNARRAY_ELEMENT_FREE (&list->u.dynarray_header.array[new_length]);
+#endif
+      list->u.dynarray_header.used = new_length;
+    }
+}
+
+/* Remove all elements from the list.  The elements are freed, but the
+   list itself is not.  */
+_GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_NONNULL ((1))
+static void
+DYNARRAY_NAME (clear) (struct DYNARRAY_STRUCT *list)
+{
+  /* free__elements__ does nothing if the list is in the failed
+     state.  */
+  DYNARRAY_NAME (free__elements__)
+    (list->u.dynarray_header.array, list->u.dynarray_header.used);
+  list->u.dynarray_header.used = 0;
+}
+
+#ifdef DYNARRAY_FINAL_TYPE
+/* Transfer the dynamic array to a permanent location at *RESULT.
+   Returns true on success on false on allocation failure.  In either
+   case, *LIST is re-initialized and can be reused.  A NULL pointer is
+   stored in *RESULT if LIST refers to an empty list.  On success, the
+   pointer in *RESULT is heap-allocated and must be deallocated using
+   free.  */
+_GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_NODISCARD
+_GL_ATTRIBUTE_NONNULL ((1, 2))
+static bool
+DYNARRAY_NAME (finalize) (struct DYNARRAY_STRUCT *list,
+                          DYNARRAY_FINAL_TYPE *result)
+{
+  struct dynarray_finalize_result res;
+  if (__libc_dynarray_finalize (&list->u.dynarray_abstract,
+                                DYNARRAY_SCRATCH (list),
+                                sizeof (DYNARRAY_ELEMENT), &res))
+    {
+      /* On success, the result owns all the data.  */
+      DYNARRAY_NAME (init) (list);
+      *result = (DYNARRAY_FINAL_TYPE) { res.array, res.length };
+      return true;
+    }
+  else
+    {
+      /* On error, we need to free all data.  */
+      DYNARRAY_FREE (list);
+      errno = ENOMEM;
+      return false;
+    }
+}
+#else /* !DYNARRAY_FINAL_TYPE */
+/* Transfer the dynamic array to a heap-allocated array and return a
+   pointer to it.  The pointer is NULL if memory allocation fails, or
+   if the array is empty, so this function should be used only for
+   arrays which are known not be empty (usually because they always
+   have a sentinel at the end).  If LENGTHP is not NULL, the array
+   length is written to *LENGTHP.  *LIST is re-initialized and can be
+   reused.  */
+_GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_NODISCARD
+_GL_ATTRIBUTE_NONNULL ((1))
+static DYNARRAY_ELEMENT *
+DYNARRAY_NAME (finalize) (struct DYNARRAY_STRUCT *list, size_t *lengthp)
+{
+  struct dynarray_finalize_result res;
+  if (__libc_dynarray_finalize (&list->u.dynarray_abstract,
+                                DYNARRAY_SCRATCH (list),
+                                sizeof (DYNARRAY_ELEMENT), &res))
+    {
+      /* On success, the result owns all the data.  */
+      DYNARRAY_NAME (init) (list);
+      if (lengthp != NULL)
+        *lengthp = res.length;
+      return res.array;
+    }
+  else
+    {
+      /* On error, we need to free all data.  */
+      DYNARRAY_FREE (list);
+      errno = ENOMEM;
+      return NULL;
+    }
+}
+#endif /* !DYNARRAY_FINAL_TYPE */
+
+/* Undo macro definitions.  */
+
+#undef DYNARRAY_CONCAT0
+#undef DYNARRAY_CONCAT1
+#undef DYNARRAY_NAME
+#undef DYNARRAY_SCRATCH
+#undef DYNARRAY_HAVE_SCRATCH
+
+#undef DYNARRAY_STRUCT
+#undef DYNARRAY_ELEMENT
+#undef DYNARRAY_PREFIX
+#undef DYNARRAY_ELEMENT_FREE
+#undef DYNARRAY_ELEMENT_INIT
+#undef DYNARRAY_INITIAL_SIZE
+#undef DYNARRAY_FINAL_TYPE
diff --git a/gl/malloc/dynarray.gl.h b/gl/malloc/dynarray.gl.h
new file mode 100644
index 0000000..34987e7
--- /dev/null
+++ b/gl/malloc/dynarray.gl.h
@@ -0,0 +1,173 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* Type-safe arrays which grow dynamically.  Shared definitions.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* To use the dynarray facility, you need to include
+   <malloc/dynarray-skeleton.c> and define the parameter macros
+   documented in that file.
+
+   A minimal example which provides a growing list of integers can be
+   defined like this:
+
+     struct int_array
+     {
+       // Pointer to result array followed by its length,
+       // as required by DYNARRAY_FINAL_TYPE.
+       int *array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_int
+     #define DYNARRAY_ELEMENT int
+     #define DYNARRAY_PREFIX dynarray_int_
+     #define DYNARRAY_FINAL_TYPE struct int_array
+     #include <malloc/dynarray-skeleton.c>
+
+   To create a three-element array with elements 1, 2, 3, use this
+   code:
+
+     struct dynarray_int dyn;
+     dynarray_int_init (&dyn);
+     for (int i = 1; i <= 3; ++i)
+       {
+         int *place = dynarray_int_emplace (&dyn);
+         assert (place != NULL);
+         *place = i;
+       }
+     struct int_array result;
+     bool ok = dynarray_int_finalize (&dyn, &result);
+     assert (ok);
+     assert (result.length == 3);
+     assert (result.array[0] == 1);
+     assert (result.array[1] == 2);
+     assert (result.array[2] == 3);
+     free (result.array);
+
+   If the elements contain resources which must be freed, define
+   DYNARRAY_ELEMENT_FREE appropriately, like this:
+
+     struct str_array
+     {
+       char **array;
+       size_t length;
+     };
+
+     #define DYNARRAY_STRUCT dynarray_str
+     #define DYNARRAY_ELEMENT char *
+     #define DYNARRAY_ELEMENT_FREE(ptr) free (*ptr)
+     #define DYNARRAY_PREFIX dynarray_str_
+     #define DYNARRAY_FINAL_TYPE struct str_array
+     #include <malloc/dynarray-skeleton.c>
+
+   Compared to scratch buffers, dynamic arrays have the following
+   features:
+
+   - They have an element type, and are not just an untyped buffer of
+     bytes.
+
+   - When growing, previously stored elements are preserved.  (It is
+     expected that scratch_buffer_grow_preserve and
+     scratch_buffer_set_array_size eventually go away because all
+     current users are moved to dynamic arrays.)
+
+   - Scratch buffers have a more aggressive growth policy because
+     growing them typically means a retry of an operation (across an
+     NSS service module boundary), which is expensive.
+
+   - For the same reason, scratch buffers have a much larger initial
+     stack allocation.  */
+
+#ifndef _DYNARRAY_H
+#define _DYNARRAY_H
+
+#include <stddef.h>
+#include <string.h>
+
+struct dynarray_header
+{
+  size_t used;
+  size_t allocated;
+  void *array;
+};
+
+/* Marker used in the allocated member to indicate that an error was
+   encountered.  */
+static inline size_t
+__dynarray_error_marker (void)
+{
+  return -1;
+}
+
+/* Internal function.  See the has_failed function in
+   dynarray-skeleton.c.  */
+static inline bool
+__dynarray_error (struct dynarray_header *list)
+{
+  return list->allocated == __dynarray_error_marker ();
+}
+
+/* Internal function.  Enlarge the dynamically allocated area of the
+   array to make room for one more element.  SCRATCH is a pointer to
+   the scratch area (which is not heap-allocated and must not be
+   freed).  ELEMENT_SIZE is the size, in bytes, of one element.
+   Return false on failure, true on success.  */
+bool __libc_dynarray_emplace_enlarge (struct dynarray_header *,
+                                      void *scratch, size_t element_size);
+
+/* Internal function.  Enlarge the dynamically allocated area of the
+   array to make room for at least SIZE elements (which must be larger
+   than the existing used part of the dynamic array).  SCRATCH is a
+   pointer to the scratch area (which is not heap-allocated and must
+   not be freed).  ELEMENT_SIZE is the size, in bytes, of one element.
+   Return false on failure, true on success.  */
+bool __libc_dynarray_resize (struct dynarray_header *, size_t size,
+                             void *scratch, size_t element_size);
+
+/* Internal function.  Like __libc_dynarray_resize, but clear the new
+   part of the dynamic array.  */
+bool __libc_dynarray_resize_clear (struct dynarray_header *, size_t size,
+                                   void *scratch, size_t element_size);
+
+/* Internal type.  */
+struct dynarray_finalize_result
+{
+  void *array;
+  size_t length;
+};
+
+/* Internal function.  Copy the dynamically-allocated area to an
+   explicitly-sized heap allocation.  SCRATCH is a pointer to the
+   embedded scratch space.  ELEMENT_SIZE is the size, in bytes, of the
+   element type.  On success, true is returned, and pointer and length
+   are written to *RESULT.  On failure, false is returned.  The caller
+   has to take care of some of the memory management; this function is
+   expected to be called from dynarray-skeleton.c.  */
+bool __libc_dynarray_finalize (struct dynarray_header *list, void *scratch,
+                               size_t element_size,
+                               struct dynarray_finalize_result *result);
+
+
+/* Internal function.  Terminate the process after an index error.
+   SIZE is the number of elements of the dynamic array.  INDEX is the
+   lookup index which triggered the failure.  */
+_Noreturn void __libc_dynarray_at_failure (size_t size, size_t index);
+
+#ifndef _ISOMAC
+#endif
+
+#endif /* _DYNARRAY_H */
diff --git a/gl/sha1-stream.c b/gl/sha1-stream.c
deleted file mode 100644
index 393d9ae..0000000
--- a/gl/sha1-stream.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/* sha1.c - Functions to compute SHA1 message digest of files or
-   memory blocks according to the NIST specification FIPS-180-1.
-
-   Copyright (C) 2000-2001, 2003-2006, 2008-2023 Free Software Foundation, Inc.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-/* Written by Scott G. Miller
-   Credits:
-      Robert Klep <robert@ilse.nl>  -- Expansion function fix
-*/
-
-#include <config.h>
-
-/* Specification.  */
-#if HAVE_OPENSSL_SHA1
-# define GL_OPENSSL_INLINE _GL_EXTERN_INLINE
-#endif
-#include "sha1.h"
-
-#include <stdlib.h>
-
-#if USE_UNLOCKED_IO
-# include "unlocked-io.h"
-#endif
-
-#include "af_alg.h"
-
-#define BLOCKSIZE 32768
-#if BLOCKSIZE % 64 != 0
-# error "invalid BLOCKSIZE"
-#endif
-
-/* Compute SHA1 message digest for bytes read from STREAM.  The
-   resulting message digest number will be written into the 20 bytes
-   beginning at RESBLOCK.  */
-int
-sha1_stream (FILE *stream, void *resblock)
-{
-  switch (afalg_stream (stream, "sha1", resblock, SHA1_DIGEST_SIZE))
-    {
-    case 0: return 0;
-    case -EIO: return 1;
-    }
-
-  char *buffer = malloc (BLOCKSIZE + 72);
-  if (!buffer)
-    return 1;
-
-  struct sha1_ctx ctx;
-  sha1_init_ctx (&ctx);
-  size_t sum;
-
-  /* Iterate over full file contents.  */
-  while (1)
-    {
-      /* We read the file in blocks of BLOCKSIZE bytes.  One call of the
-         computation function processes the whole buffer so that with the
-         next round of the loop another block can be read.  */
-      size_t n;
-      sum = 0;
-
-      /* Read block.  Take care for partial reads.  */
-      while (1)
-        {
-          /* Either process a partial fread() from this loop,
-             or the fread() in afalg_stream may have gotten EOF.
-             We need to avoid a subsequent fread() as EOF may
-             not be sticky.  For details of such systems, see:
-             https://sourceware.org/bugzilla/show_bug.cgi?id=1190  */
-          if (feof (stream))
-            goto process_partial_block;
-
-          n = fread (buffer + sum, 1, BLOCKSIZE - sum, stream);
-
-          sum += n;
-
-          if (sum == BLOCKSIZE)
-            break;
-
-          if (n == 0)
-            {
-              /* Check for the error flag IFF N == 0, so that we don't
-                 exit the loop after a partial read due to e.g., EAGAIN
-                 or EWOULDBLOCK.  */
-              if (ferror (stream))
-                {
-                  free (buffer);
-                  return 1;
-                }
-              goto process_partial_block;
-            }
-        }
-
-      /* Process buffer with BLOCKSIZE bytes.  Note that
-                        BLOCKSIZE % 64 == 0
-       */
-      sha1_process_block (buffer, BLOCKSIZE, &ctx);
-    }
-
- process_partial_block:;
-
-  /* Process any remaining bytes.  */
-  if (sum > 0)
-    sha1_process_bytes (buffer, sum, &ctx);
-
-  /* Construct result in desired memory.  */
-  sha1_finish_ctx (&ctx, resblock);
-  free (buffer);
-  return 0;
-}
-
-/*
- * Hey Emacs!
- * Local Variables:
- * coding: utf-8
- * End:
- */
diff --git a/gl/sha1.c b/gl/sha1.c
deleted file mode 100644
index 80f0b7a..0000000
--- a/gl/sha1.c
+++ /dev/null
@@ -1,360 +0,0 @@
-/* sha1.c - Functions to compute SHA1 message digest of files or
-   memory blocks according to the NIST specification FIPS-180-1.
-
-   Copyright (C) 2000-2001, 2003-2006, 2008-2023 Free Software Foundation, Inc.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-/* Written by Scott G. Miller
-   Credits:
-      Robert Klep <robert@ilse.nl>  -- Expansion function fix
-*/
-
-#include <config.h>
-
-/* Specification.  */
-#if HAVE_OPENSSL_SHA1
-# define GL_OPENSSL_INLINE _GL_EXTERN_INLINE
-#endif
-#include "sha1.h"
-
-#include <stdint.h>
-#include <string.h>
-
-#include <byteswap.h>
-#ifdef WORDS_BIGENDIAN
-# define SWAP(n) (n)
-#else
-# define SWAP(n) bswap_32 (n)
-#endif
-
-#if ! HAVE_OPENSSL_SHA1
-
-/* This array contains the bytes used to pad the buffer to the next
-   64-byte boundary.  (RFC 1321, 3.1: Step 1)  */
-static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ...  */ };
-
-
-/* Take a pointer to a 160 bit block of data (five 32 bit ints) and
-   initialize it to the start constants of the SHA1 algorithm.  This
-   must be called before using hash in the call to sha1_hash.  */
-void
-sha1_init_ctx (struct sha1_ctx *ctx)
-{
-  ctx->A = 0x67452301;
-  ctx->B = 0xefcdab89;
-  ctx->C = 0x98badcfe;
-  ctx->D = 0x10325476;
-  ctx->E = 0xc3d2e1f0;
-
-  ctx->total[0] = ctx->total[1] = 0;
-  ctx->buflen = 0;
-}
-
-/* Copy the 4 byte value from v into the memory location pointed to by *cp,
-   If your architecture allows unaligned access this is equivalent to
-   * (uint32_t *) cp = v  */
-static void
-set_uint32 (char *cp, uint32_t v)
-{
-  memcpy (cp, &v, sizeof v);
-}
-
-/* Put result from CTX in first 20 bytes following RESBUF.  The result
-   must be in little endian byte order.  */
-void *
-sha1_read_ctx (const struct sha1_ctx *ctx, void *resbuf)
-{
-  char *r = resbuf;
-  set_uint32 (r + 0 * sizeof ctx->A, SWAP (ctx->A));
-  set_uint32 (r + 1 * sizeof ctx->B, SWAP (ctx->B));
-  set_uint32 (r + 2 * sizeof ctx->C, SWAP (ctx->C));
-  set_uint32 (r + 3 * sizeof ctx->D, SWAP (ctx->D));
-  set_uint32 (r + 4 * sizeof ctx->E, SWAP (ctx->E));
-
-  return resbuf;
-}
-
-/* Process the remaining bytes in the internal buffer and the usual
-   prolog according to the standard and write the result to RESBUF.  */
-void *
-sha1_finish_ctx (struct sha1_ctx *ctx, void *resbuf)
-{
-  /* Take yet unprocessed bytes into account.  */
-  uint32_t bytes = ctx->buflen;
-  size_t size = (bytes < 56) ? 64 / 4 : 64 * 2 / 4;
-
-  /* Now count remaining bytes.  */
-  ctx->total[0] += bytes;
-  if (ctx->total[0] < bytes)
-    ++ctx->total[1];
-
-  /* Put the 64-bit file length in *bits* at the end of the buffer.  */
-  ctx->buffer[size - 2] = SWAP ((ctx->total[1] << 3) | (ctx->total[0] >> 29));
-  ctx->buffer[size - 1] = SWAP (ctx->total[0] << 3);
-
-  memcpy (&((char *) ctx->buffer)[bytes], fillbuf, (size - 2) * 4 - bytes);
-
-  /* Process last bytes.  */
-  sha1_process_block (ctx->buffer, size * 4, ctx);
-
-  return sha1_read_ctx (ctx, resbuf);
-}
-
-/* Compute SHA1 message digest for LEN bytes beginning at BUFFER.  The
-   result is always in little endian byte order, so that a byte-wise
-   output yields to the wanted ASCII representation of the message
-   digest.  */
-void *
-sha1_buffer (const char *buffer, size_t len, void *resblock)
-{
-  struct sha1_ctx ctx;
-
-  /* Initialize the computation context.  */
-  sha1_init_ctx (&ctx);
-
-  /* Process whole buffer but last len % 64 bytes.  */
-  sha1_process_bytes (buffer, len, &ctx);
-
-  /* Put result in desired memory area.  */
-  return sha1_finish_ctx (&ctx, resblock);
-}
-
-void
-sha1_process_bytes (const void *buffer, size_t len, struct sha1_ctx *ctx)
-{
-  /* When we already have some bits in our internal buffer concatenate
-     both inputs first.  */
-  if (ctx->buflen != 0)
-    {
-      size_t left_over = ctx->buflen;
-      size_t add = 128 - left_over > len ? len : 128 - left_over;
-
-      memcpy (&((char *) ctx->buffer)[left_over], buffer, add);
-      ctx->buflen += add;
-
-      if (ctx->buflen > 64)
-        {
-          sha1_process_block (ctx->buffer, ctx->buflen & ~63, ctx);
-
-          ctx->buflen &= 63;
-          /* The regions in the following copy operation cannot overlap,
-             because ctx->buflen < 64 ≤ (left_over + add) & ~63.  */
-          memcpy (ctx->buffer,
-                  &((char *) ctx->buffer)[(left_over + add) & ~63],
-                  ctx->buflen);
-        }
-
-      buffer = (const char *) buffer + add;
-      len -= add;
-    }
-
-  /* Process available complete blocks.  */
-  if (len >= 64)
-    {
-#if !(_STRING_ARCH_unaligned || _STRING_INLINE_unaligned)
-# define UNALIGNED_P(p) ((uintptr_t) (p) % alignof (uint32_t) != 0)
-      if (UNALIGNED_P (buffer))
-        while (len > 64)
-          {
-            sha1_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx);
-            buffer = (const char *) buffer + 64;
-            len -= 64;
-          }
-      else
-#endif
-        {
-          sha1_process_block (buffer, len & ~63, ctx);
-          buffer = (const char *) buffer + (len & ~63);
-          len &= 63;
-        }
-    }
-
-  /* Move remaining bytes in internal buffer.  */
-  if (len > 0)
-    {
-      size_t left_over = ctx->buflen;
-
-      memcpy (&((char *) ctx->buffer)[left_over], buffer, len);
-      left_over += len;
-      if (left_over >= 64)
-        {
-          sha1_process_block (ctx->buffer, 64, ctx);
-          left_over -= 64;
-          /* The regions in the following copy operation cannot overlap,
-             because left_over ≤ 64.  */
-          memcpy (ctx->buffer, &ctx->buffer[16], left_over);
-        }
-      ctx->buflen = left_over;
-    }
-}
-
-/* --- Code below is the primary difference between md5.c and sha1.c --- */
-
-/* SHA1 round constants */
-#define K1 0x5a827999
-#define K2 0x6ed9eba1
-#define K3 0x8f1bbcdc
-#define K4 0xca62c1d6
-
-/* Round functions.  Note that F2 is the same as F4.  */
-#define F1(B,C,D) ( D ^ ( B & ( C ^ D ) ) )
-#define F2(B,C,D) (B ^ C ^ D)
-#define F3(B,C,D) ( ( B & C ) | ( D & ( B | C ) ) )
-#define F4(B,C,D) (B ^ C ^ D)
-
-/* Process LEN bytes of BUFFER, accumulating context into CTX.
-   It is assumed that LEN % 64 == 0.
-   Most of this code comes from GnuPG's cipher/sha1.c.  */
-
-void
-sha1_process_block (const void *buffer, size_t len, struct sha1_ctx *ctx)
-{
-  const uint32_t *words = buffer;
-  size_t nwords = len / sizeof (uint32_t);
-  const uint32_t *endp = words + nwords;
-  uint32_t x[16];
-  uint32_t a = ctx->A;
-  uint32_t b = ctx->B;
-  uint32_t c = ctx->C;
-  uint32_t d = ctx->D;
-  uint32_t e = ctx->E;
-  uint32_t lolen = len;
-
-  /* First increment the byte count.  RFC 1321 specifies the possible
-     length of the file up to 2^64 bits.  Here we only compute the
-     number of bytes.  Do a double word increment.  */
-  ctx->total[0] += lolen;
-  ctx->total[1] += (len >> 31 >> 1) + (ctx->total[0] < lolen);
-
-#define rol(x, n) (((x) << (n)) | ((uint32_t) (x) >> (32 - (n))))
-
-#define M(I) ( tm =   x[I&0x0f] ^ x[(I-14)&0x0f] \
-                    ^ x[(I-8)&0x0f] ^ x[(I-3)&0x0f] \
-               , (x[I&0x0f] = rol(tm, 1)) )
-
-#define R(A,B,C,D,E,F,K,M)  do { E += rol( A, 5 )     \
-                                      + F( B, C, D )  \
-                                      + K             \
-                                      + M;            \
-                                 B = rol( B, 30 );    \
-                               } while(0)
-
-  while (words < endp)
-    {
-      uint32_t tm;
-      int t;
-      for (t = 0; t < 16; t++)
-        {
-          x[t] = SWAP (*words);
-          words++;
-        }
-
-      R( a, b, c, d, e, F1, K1, x[ 0] );
-      R( e, a, b, c, d, F1, K1, x[ 1] );
-      R( d, e, a, b, c, F1, K1, x[ 2] );
-      R( c, d, e, a, b, F1, K1, x[ 3] );
-      R( b, c, d, e, a, F1, K1, x[ 4] );
-      R( a, b, c, d, e, F1, K1, x[ 5] );
-      R( e, a, b, c, d, F1, K1, x[ 6] );
-      R( d, e, a, b, c, F1, K1, x[ 7] );
-      R( c, d, e, a, b, F1, K1, x[ 8] );
-      R( b, c, d, e, a, F1, K1, x[ 9] );
-      R( a, b, c, d, e, F1, K1, x[10] );
-      R( e, a, b, c, d, F1, K1, x[11] );
-      R( d, e, a, b, c, F1, K1, x[12] );
-      R( c, d, e, a, b, F1, K1, x[13] );
-      R( b, c, d, e, a, F1, K1, x[14] );
-      R( a, b, c, d, e, F1, K1, x[15] );
-      R( e, a, b, c, d, F1, K1, M(16) );
-      R( d, e, a, b, c, F1, K1, M(17) );
-      R( c, d, e, a, b, F1, K1, M(18) );
-      R( b, c, d, e, a, F1, K1, M(19) );
-      R( a, b, c, d, e, F2, K2, M(20) );
-      R( e, a, b, c, d, F2, K2, M(21) );
-      R( d, e, a, b, c, F2, K2, M(22) );
-      R( c, d, e, a, b, F2, K2, M(23) );
-      R( b, c, d, e, a, F2, K2, M(24) );
-      R( a, b, c, d, e, F2, K2, M(25) );
-      R( e, a, b, c, d, F2, K2, M(26) );
-      R( d, e, a, b, c, F2, K2, M(27) );
-      R( c, d, e, a, b, F2, K2, M(28) );
-      R( b, c, d, e, a, F2, K2, M(29) );
-      R( a, b, c, d, e, F2, K2, M(30) );
-      R( e, a, b, c, d, F2, K2, M(31) );
-      R( d, e, a, b, c, F2, K2, M(32) );
-      R( c, d, e, a, b, F2, K2, M(33) );
-      R( b, c, d, e, a, F2, K2, M(34) );
-      R( a, b, c, d, e, F2, K2, M(35) );
-      R( e, a, b, c, d, F2, K2, M(36) );
-      R( d, e, a, b, c, F2, K2, M(37) );
-      R( c, d, e, a, b, F2, K2, M(38) );
-      R( b, c, d, e, a, F2, K2, M(39) );
-      R( a, b, c, d, e, F3, K3, M(40) );
-      R( e, a, b, c, d, F3, K3, M(41) );
-      R( d, e, a, b, c, F3, K3, M(42) );
-      R( c, d, e, a, b, F3, K3, M(43) );
-      R( b, c, d, e, a, F3, K3, M(44) );
-      R( a, b, c, d, e, F3, K3, M(45) );
-      R( e, a, b, c, d, F3, K3, M(46) );
-      R( d, e, a, b, c, F3, K3, M(47) );
-      R( c, d, e, a, b, F3, K3, M(48) );
-      R( b, c, d, e, a, F3, K3, M(49) );
-      R( a, b, c, d, e, F3, K3, M(50) );
-      R( e, a, b, c, d, F3, K3, M(51) );
-      R( d, e, a, b, c, F3, K3, M(52) );
-      R( c, d, e, a, b, F3, K3, M(53) );
-      R( b, c, d, e, a, F3, K3, M(54) );
-      R( a, b, c, d, e, F3, K3, M(55) );
-      R( e, a, b, c, d, F3, K3, M(56) );
-      R( d, e, a, b, c, F3, K3, M(57) );
-      R( c, d, e, a, b, F3, K3, M(58) );
-      R( b, c, d, e, a, F3, K3, M(59) );
-      R( a, b, c, d, e, F4, K4, M(60) );
-      R( e, a, b, c, d, F4, K4, M(61) );
-      R( d, e, a, b, c, F4, K4, M(62) );
-      R( c, d, e, a, b, F4, K4, M(63) );
-      R( b, c, d, e, a, F4, K4, M(64) );
-      R( a, b, c, d, e, F4, K4, M(65) );
-      R( e, a, b, c, d, F4, K4, M(66) );
-      R( d, e, a, b, c, F4, K4, M(67) );
-      R( c, d, e, a, b, F4, K4, M(68) );
-      R( b, c, d, e, a, F4, K4, M(69) );
-      R( a, b, c, d, e, F4, K4, M(70) );
-      R( e, a, b, c, d, F4, K4, M(71) );
-      R( d, e, a, b, c, F4, K4, M(72) );
-      R( c, d, e, a, b, F4, K4, M(73) );
-      R( b, c, d, e, a, F4, K4, M(74) );
-      R( a, b, c, d, e, F4, K4, M(75) );
-      R( e, a, b, c, d, F4, K4, M(76) );
-      R( d, e, a, b, c, F4, K4, M(77) );
-      R( c, d, e, a, b, F4, K4, M(78) );
-      R( b, c, d, e, a, F4, K4, M(79) );
-
-      a = ctx->A += a;
-      b = ctx->B += b;
-      c = ctx->C += c;
-      d = ctx->D += d;
-      e = ctx->E += e;
-    }
-}
-
-#endif
-
-/*
- * Hey Emacs!
- * Local Variables:
- * coding: utf-8
- * End:
- */
diff --git a/gl/sha1.h b/gl/sha1.h
deleted file mode 100644
index 5a58b56..0000000
--- a/gl/sha1.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/* Declarations of functions and data types used for SHA1 sum
-   library functions.
-   Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2023 Free Software
-   Foundation, Inc.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-#ifndef SHA1_H
-# define SHA1_H 1
-
-# include <stdio.h>
-# include <stdint.h>
-
-# if HAVE_OPENSSL_SHA1
-#  ifndef OPENSSL_API_COMPAT
-#   define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API.  */
-#  endif
-#  include <openssl/sha.h>
-# endif
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# define SHA1_DIGEST_SIZE 20
-
-# if HAVE_OPENSSL_SHA1
-#  define GL_OPENSSL_NAME 1
-#  include "gl_openssl.h"
-# else
-/* Structure to save state of computation between the single steps.  */
-struct sha1_ctx
-{
-  uint32_t A;
-  uint32_t B;
-  uint32_t C;
-  uint32_t D;
-  uint32_t E;
-
-  uint32_t total[2];
-  uint32_t buflen;     /* ≥ 0, ≤ 128 */
-  uint32_t buffer[32]; /* 128 bytes; the first buflen bytes are in use */
-};
-
-/* Initialize structure containing state of computation. */
-extern void sha1_init_ctx (struct sha1_ctx *ctx);
-
-/* Starting with the result of former calls of this function (or the
-   initialization function update the context for the next LEN bytes
-   starting at BUFFER.
-   It is necessary that LEN is a multiple of 64!!! */
-extern void sha1_process_block (const void *buffer, size_t len,
-                                struct sha1_ctx *ctx);
-
-/* Starting with the result of former calls of this function (or the
-   initialization function update the context for the next LEN bytes
-   starting at BUFFER.
-   It is NOT required that LEN is a multiple of 64.  */
-extern void sha1_process_bytes (const void *buffer, size_t len,
-                                struct sha1_ctx *ctx);
-
-/* Process the remaining bytes in the buffer and put result from CTX
-   in first 20 bytes following RESBUF.  The result is always in little
-   endian byte order, so that a byte-wise output yields to the wanted
-   ASCII representation of the message digest.  */
-extern void *sha1_finish_ctx (struct sha1_ctx *ctx, void *restrict resbuf);
-
-
-/* Put result from CTX in first 20 bytes following RESBUF.  The result is
-   always in little endian byte order, so that a byte-wise output yields
-   to the wanted ASCII representation of the message digest.  */
-extern void *sha1_read_ctx (const struct sha1_ctx *ctx, void *restrict resbuf);
-
-
-/* Compute SHA1 message digest for LEN bytes beginning at BUFFER.  The
-   result is always in little endian byte order, so that a byte-wise
-   output yields to the wanted ASCII representation of the message
-   digest.  */
-extern void *sha1_buffer (const char *buffer, size_t len,
-                          void *restrict resblock);
-
-# endif
-
-/* Compute SHA1 message digest for bytes read from STREAM.
-   STREAM is an open file stream.  Regular files are handled more efficiently.
-   The contents of STREAM from its current position to its end will be read.
-   The case that the last operation on STREAM was an 'ungetc' is not supported.
-   The resulting message digest number will be written into the 20 bytes
-   beginning at RESBLOCK.  */
-extern int sha1_stream (FILE *stream, void *resblock);
-
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/*
- * Hey Emacs!
- * Local Variables:
- * coding: utf-8
- * End:
- */
diff --git a/gl/sha256-stream.c b/gl/sha256-stream.c
new file mode 100644
index 0000000..0e83380
--- /dev/null
+++ b/gl/sha256-stream.c
@@ -0,0 +1,145 @@
+/* sha256.c - Functions to compute SHA256 and SHA224 message digest of files or
+   memory blocks according to the NIST specification FIPS-180-2.
+
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by David Madore, considerably copypasting from
+   Scott G. Miller's sha1.c
+*/
+
+#include <config.h>
+
+/* Specification.  */
+#if HAVE_OPENSSL_SHA256
+# define GL_OPENSSL_INLINE _GL_EXTERN_INLINE
+#endif
+#include "sha256.h"
+
+#include <stdlib.h>
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+#include "af_alg.h"
+
+#define BLOCKSIZE 32768
+#if BLOCKSIZE % 64 != 0
+# error "invalid BLOCKSIZE"
+#endif
+
+/* Compute message digest for bytes read from STREAM using algorithm ALG.
+   Write the message digest into RESBLOCK, which contains HASHLEN bytes.
+   The initial and finishing operations are INIT_CTX and FINISH_CTX.
+   Return zero if and only if successful.  */
+static int
+shaxxx_stream (FILE *stream, char const *alg, void *resblock,
+               ssize_t hashlen, void (*init_ctx) (struct sha256_ctx *),
+               void *(*finish_ctx) (struct sha256_ctx *, void *))
+{
+  switch (afalg_stream (stream, alg, resblock, hashlen))
+    {
+    case 0: return 0;
+    case -EIO: return 1;
+    }
+
+  char *buffer = malloc (BLOCKSIZE + 72);
+  if (!buffer)
+    return 1;
+
+  struct sha256_ctx ctx;
+  init_ctx (&ctx);
+  size_t sum;
+
+  /* Iterate over full file contents.  */
+  while (1)
+    {
+      /* We read the file in blocks of BLOCKSIZE bytes.  One call of the
+         computation function processes the whole buffer so that with the
+         next round of the loop another block can be read.  */
+      size_t n;
+      sum = 0;
+
+      /* Read block.  Take care for partial reads.  */
+      while (1)
+        {
+          /* Either process a partial fread() from this loop,
+             or the fread() in afalg_stream may have gotten EOF.
+             We need to avoid a subsequent fread() as EOF may
+             not be sticky.  For details of such systems, see:
+             https://sourceware.org/bugzilla/show_bug.cgi?id=1190  */
+          if (feof (stream))
+            goto process_partial_block;
+
+          n = fread (buffer + sum, 1, BLOCKSIZE - sum, stream);
+
+          sum += n;
+
+          if (sum == BLOCKSIZE)
+            break;
+
+          if (n == 0)
+            {
+              /* Check for the error flag IFF N == 0, so that we don't
+                 exit the loop after a partial read due to e.g., EAGAIN
+                 or EWOULDBLOCK.  */
+              if (ferror (stream))
+                {
+                  free (buffer);
+                  return 1;
+                }
+              goto process_partial_block;
+            }
+        }
+
+      /* Process buffer with BLOCKSIZE bytes.  Note that
+                        BLOCKSIZE % 64 == 0
+       */
+      sha256_process_block (buffer, BLOCKSIZE, &ctx);
+    }
+
+ process_partial_block:;
+
+  /* Process any remaining bytes.  */
+  if (sum > 0)
+    sha256_process_bytes (buffer, sum, &ctx);
+
+  /* Construct result in desired memory.  */
+  finish_ctx (&ctx, resblock);
+  free (buffer);
+  return 0;
+}
+
+int
+sha256_stream (FILE *stream, void *resblock)
+{
+  return shaxxx_stream (stream, "sha256", resblock, SHA256_DIGEST_SIZE,
+                        sha256_init_ctx, sha256_finish_ctx);
+}
+
+int
+sha224_stream (FILE *stream, void *resblock)
+{
+  return shaxxx_stream (stream, "sha224", resblock, SHA224_DIGEST_SIZE,
+                        sha224_init_ctx, sha224_finish_ctx);
+}
+
+/*
+ * Hey Emacs!
+ * Local Variables:
+ * coding: utf-8
+ * End:
+ */
diff --git a/gl/sha256.c b/gl/sha256.c
new file mode 100644
index 0000000..e5fea02
--- /dev/null
+++ b/gl/sha256.c
@@ -0,0 +1,432 @@
+/* sha256.c - Functions to compute SHA256 and SHA224 message digest of files or
+   memory blocks according to the NIST specification FIPS-180-2.
+
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by David Madore, considerably copypasting from
+   Scott G. Miller's sha1.c
+*/
+
+#include <config.h>
+
+/* Specification.  */
+#if HAVE_OPENSSL_SHA256
+# define GL_OPENSSL_INLINE _GL_EXTERN_INLINE
+#endif
+#include "sha256.h"
+
+#include <stdint.h>
+#include <string.h>
+
+#include <byteswap.h>
+#ifdef WORDS_BIGENDIAN
+# define SWAP(n) (n)
+#else
+# define SWAP(n) bswap_32 (n)
+#endif
+
+#if ! HAVE_OPENSSL_SHA256
+
+/* This array contains the bytes used to pad the buffer to the next
+   64-byte boundary.  */
+static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ...  */ };
+
+
+/*
+  Takes a pointer to a 256 bit block of data (eight 32 bit ints) and
+  initializes it to the start constants of the SHA256 algorithm.  This
+  must be called before using hash in the call to sha256_hash
+*/
+void
+sha256_init_ctx (struct sha256_ctx *ctx)
+{
+  ctx->state[0] = 0x6a09e667UL;
+  ctx->state[1] = 0xbb67ae85UL;
+  ctx->state[2] = 0x3c6ef372UL;
+  ctx->state[3] = 0xa54ff53aUL;
+  ctx->state[4] = 0x510e527fUL;
+  ctx->state[5] = 0x9b05688cUL;
+  ctx->state[6] = 0x1f83d9abUL;
+  ctx->state[7] = 0x5be0cd19UL;
+
+  ctx->total[0] = ctx->total[1] = 0;
+  ctx->buflen = 0;
+}
+
+void
+sha224_init_ctx (struct sha256_ctx *ctx)
+{
+  ctx->state[0] = 0xc1059ed8UL;
+  ctx->state[1] = 0x367cd507UL;
+  ctx->state[2] = 0x3070dd17UL;
+  ctx->state[3] = 0xf70e5939UL;
+  ctx->state[4] = 0xffc00b31UL;
+  ctx->state[5] = 0x68581511UL;
+  ctx->state[6] = 0x64f98fa7UL;
+  ctx->state[7] = 0xbefa4fa4UL;
+
+  ctx->total[0] = ctx->total[1] = 0;
+  ctx->buflen = 0;
+}
+
+/* Copy the value from v into the memory location pointed to by *CP,
+   If your architecture allows unaligned access, this is equivalent to
+   * (__typeof__ (v) *) cp = v  */
+static void
+set_uint32 (char *cp, uint32_t v)
+{
+  memcpy (cp, &v, sizeof v);
+}
+
+/* Put result from CTX in first 32 bytes following RESBUF.
+   The result must be in little endian byte order.  */
+void *
+sha256_read_ctx (const struct sha256_ctx *ctx, void *resbuf)
+{
+  int i;
+  char *r = resbuf;
+
+  for (i = 0; i < 8; i++)
+    set_uint32 (r + i * sizeof ctx->state[0], SWAP (ctx->state[i]));
+
+  return resbuf;
+}
+
+void *
+sha224_read_ctx (const struct sha256_ctx *ctx, void *resbuf)
+{
+  int i;
+  char *r = resbuf;
+
+  for (i = 0; i < 7; i++)
+    set_uint32 (r + i * sizeof ctx->state[0], SWAP (ctx->state[i]));
+
+  return resbuf;
+}
+
+/* Process the remaining bytes in the internal buffer and the usual
+   prolog according to the standard and write the result to RESBUF.  */
+static void
+sha256_conclude_ctx (struct sha256_ctx *ctx)
+{
+  /* Take yet unprocessed bytes into account.  */
+  size_t bytes = ctx->buflen;
+  size_t size = (bytes < 56) ? 64 / 4 : 64 * 2 / 4;
+
+  /* Now count remaining bytes.  */
+  ctx->total[0] += bytes;
+  if (ctx->total[0] < bytes)
+    ++ctx->total[1];
+
+  /* Put the 64-bit file length in *bits* at the end of the buffer.
+     Use set_uint32 rather than a simple assignment, to avoid risk of
+     unaligned access.  */
+  set_uint32 ((char *) &ctx->buffer[size - 2],
+              SWAP ((ctx->total[1] << 3) | (ctx->total[0] >> 29)));
+  set_uint32 ((char *) &ctx->buffer[size - 1],
+              SWAP (ctx->total[0] << 3));
+
+  memcpy (&((char *) ctx->buffer)[bytes], fillbuf, (size - 2) * 4 - bytes);
+
+  /* Process last bytes.  */
+  sha256_process_block (ctx->buffer, size * 4, ctx);
+}
+
+void *
+sha256_finish_ctx (struct sha256_ctx *ctx, void *resbuf)
+{
+  sha256_conclude_ctx (ctx);
+  return sha256_read_ctx (ctx, resbuf);
+}
+
+void *
+sha224_finish_ctx (struct sha256_ctx *ctx, void *resbuf)
+{
+  sha256_conclude_ctx (ctx);
+  return sha224_read_ctx (ctx, resbuf);
+}
+
+/* Compute SHA256 message digest for LEN bytes beginning at BUFFER.  The
+   result is always in little endian byte order, so that a byte-wise
+   output yields to the wanted ASCII representation of the message
+   digest.  */
+void *
+sha256_buffer (const char *buffer, size_t len, void *resblock)
+{
+  struct sha256_ctx ctx;
+
+  /* Initialize the computation context.  */
+  sha256_init_ctx (&ctx);
+
+  /* Process whole buffer but last len % 64 bytes.  */
+  sha256_process_bytes (buffer, len, &ctx);
+
+  /* Put result in desired memory area.  */
+  return sha256_finish_ctx (&ctx, resblock);
+}
+
+void *
+sha224_buffer (const char *buffer, size_t len, void *resblock)
+{
+  struct sha256_ctx ctx;
+
+  /* Initialize the computation context.  */
+  sha224_init_ctx (&ctx);
+
+  /* Process whole buffer but last len % 64 bytes.  */
+  sha256_process_bytes (buffer, len, &ctx);
+
+  /* Put result in desired memory area.  */
+  return sha224_finish_ctx (&ctx, resblock);
+}
+
+void
+sha256_process_bytes (const void *buffer, size_t len, struct sha256_ctx *ctx)
+{
+  /* When we already have some bits in our internal buffer concatenate
+     both inputs first.  */
+  if (ctx->buflen != 0)
+    {
+      size_t left_over = ctx->buflen;
+      size_t add = 128 - left_over > len ? len : 128 - left_over;
+
+      memcpy (&((char *) ctx->buffer)[left_over], buffer, add);
+      ctx->buflen += add;
+
+      if (ctx->buflen > 64)
+        {
+          sha256_process_block (ctx->buffer, ctx->buflen & ~63, ctx);
+
+          ctx->buflen &= 63;
+          /* The regions in the following copy operation cannot overlap,
+             because ctx->buflen < 64 ≤ (left_over + add) & ~63.  */
+          memcpy (ctx->buffer,
+                  &((char *) ctx->buffer)[(left_over + add) & ~63],
+                  ctx->buflen);
+        }
+
+      buffer = (const char *) buffer + add;
+      len -= add;
+    }
+
+  /* Process available complete blocks.  */
+  if (len >= 64)
+    {
+#if !(_STRING_ARCH_unaligned || _STRING_INLINE_unaligned)
+# define UNALIGNED_P(p) ((uintptr_t) (p) % alignof (uint32_t) != 0)
+      if (UNALIGNED_P (buffer))
+        while (len > 64)
+          {
+            sha256_process_block (memcpy (ctx->buffer, buffer, 64), 64, ctx);
+            buffer = (const char *) buffer + 64;
+            len -= 64;
+          }
+      else
+#endif
+        {
+          sha256_process_block (buffer, len & ~63, ctx);
+          buffer = (const char *) buffer + (len & ~63);
+          len &= 63;
+        }
+    }
+
+  /* Move remaining bytes in internal buffer.  */
+  if (len > 0)
+    {
+      size_t left_over = ctx->buflen;
+
+      memcpy (&((char *) ctx->buffer)[left_over], buffer, len);
+      left_over += len;
+      if (left_over >= 64)
+        {
+          sha256_process_block (ctx->buffer, 64, ctx);
+          left_over -= 64;
+          /* The regions in the following copy operation cannot overlap,
+             because left_over ≤ 64.  */
+          memcpy (ctx->buffer, &ctx->buffer[16], left_over);
+        }
+      ctx->buflen = left_over;
+    }
+}
+
+/* --- Code below is the primary difference between sha1.c and sha256.c --- */
+
+/* SHA256 round constants */
+#define K(I) sha256_round_constants[I]
+static const uint32_t sha256_round_constants[64] = {
+  0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
+  0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
+  0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
+  0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
+  0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+  0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
+  0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
+  0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
+  0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
+  0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+  0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
+  0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
+  0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
+  0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
+  0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+  0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL,
+};
+
+/* Round functions.  */
+#define F2(A,B,C) ( ( A & B ) | ( C & ( A | B ) ) )
+#define F1(E,F,G) ( G ^ ( E & ( F ^ G ) ) )
+
+/* Process LEN bytes of BUFFER, accumulating context into CTX.
+   It is assumed that LEN % 64 == 0.
+   Most of this code comes from GnuPG's cipher/sha1.c.  */
+
+void
+sha256_process_block (const void *buffer, size_t len, struct sha256_ctx *ctx)
+{
+  const uint32_t *words = buffer;
+  size_t nwords = len / sizeof (uint32_t);
+  const uint32_t *endp = words + nwords;
+  uint32_t x[16];
+  uint32_t a = ctx->state[0];
+  uint32_t b = ctx->state[1];
+  uint32_t c = ctx->state[2];
+  uint32_t d = ctx->state[3];
+  uint32_t e = ctx->state[4];
+  uint32_t f = ctx->state[5];
+  uint32_t g = ctx->state[6];
+  uint32_t h = ctx->state[7];
+  uint32_t lolen = len;
+
+  /* First increment the byte count.  FIPS PUB 180-2 specifies the possible
+     length of the file up to 2^64 bits.  Here we only compute the
+     number of bytes.  Do a double word increment.  */
+  ctx->total[0] += lolen;
+  ctx->total[1] += (len >> 31 >> 1) + (ctx->total[0] < lolen);
+
+#define rol(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
+#define S0(x) (rol(x,25)^rol(x,14)^(x>>3))
+#define S1(x) (rol(x,15)^rol(x,13)^(x>>10))
+#define SS0(x) (rol(x,30)^rol(x,19)^rol(x,10))
+#define SS1(x) (rol(x,26)^rol(x,21)^rol(x,7))
+
+#define M(I) ( tm =   S1(x[(I-2)&0x0f]) + x[(I-7)&0x0f] \
+                    + S0(x[(I-15)&0x0f]) + x[I&0x0f]    \
+               , x[I&0x0f] = tm )
+
+#define R(A,B,C,D,E,F,G,H,K,M)  do { t0 = SS0(A) + F2(A,B,C); \
+                                     t1 = H + SS1(E)  \
+                                      + F1(E,F,G)     \
+                                      + K             \
+                                      + M;            \
+                                     D += t1;  H = t0 + t1; \
+                               } while(0)
+
+  while (words < endp)
+    {
+      uint32_t tm;
+      uint32_t t0, t1;
+      int t;
+      /* FIXME: see sha1.c for a better implementation.  */
+      for (t = 0; t < 16; t++)
+        {
+          x[t] = SWAP (*words);
+          words++;
+        }
+
+      R( a, b, c, d, e, f, g, h, K( 0), x[ 0] );
+      R( h, a, b, c, d, e, f, g, K( 1), x[ 1] );
+      R( g, h, a, b, c, d, e, f, K( 2), x[ 2] );
+      R( f, g, h, a, b, c, d, e, K( 3), x[ 3] );
+      R( e, f, g, h, a, b, c, d, K( 4), x[ 4] );
+      R( d, e, f, g, h, a, b, c, K( 5), x[ 5] );
+      R( c, d, e, f, g, h, a, b, K( 6), x[ 6] );
+      R( b, c, d, e, f, g, h, a, K( 7), x[ 7] );
+      R( a, b, c, d, e, f, g, h, K( 8), x[ 8] );
+      R( h, a, b, c, d, e, f, g, K( 9), x[ 9] );
+      R( g, h, a, b, c, d, e, f, K(10), x[10] );
+      R( f, g, h, a, b, c, d, e, K(11), x[11] );
+      R( e, f, g, h, a, b, c, d, K(12), x[12] );
+      R( d, e, f, g, h, a, b, c, K(13), x[13] );
+      R( c, d, e, f, g, h, a, b, K(14), x[14] );
+      R( b, c, d, e, f, g, h, a, K(15), x[15] );
+      R( a, b, c, d, e, f, g, h, K(16), M(16) );
+      R( h, a, b, c, d, e, f, g, K(17), M(17) );
+      R( g, h, a, b, c, d, e, f, K(18), M(18) );
+      R( f, g, h, a, b, c, d, e, K(19), M(19) );
+      R( e, f, g, h, a, b, c, d, K(20), M(20) );
+      R( d, e, f, g, h, a, b, c, K(21), M(21) );
+      R( c, d, e, f, g, h, a, b, K(22), M(22) );
+      R( b, c, d, e, f, g, h, a, K(23), M(23) );
+      R( a, b, c, d, e, f, g, h, K(24), M(24) );
+      R( h, a, b, c, d, e, f, g, K(25), M(25) );
+      R( g, h, a, b, c, d, e, f, K(26), M(26) );
+      R( f, g, h, a, b, c, d, e, K(27), M(27) );
+      R( e, f, g, h, a, b, c, d, K(28), M(28) );
+      R( d, e, f, g, h, a, b, c, K(29), M(29) );
+      R( c, d, e, f, g, h, a, b, K(30), M(30) );
+      R( b, c, d, e, f, g, h, a, K(31), M(31) );
+      R( a, b, c, d, e, f, g, h, K(32), M(32) );
+      R( h, a, b, c, d, e, f, g, K(33), M(33) );
+      R( g, h, a, b, c, d, e, f, K(34), M(34) );
+      R( f, g, h, a, b, c, d, e, K(35), M(35) );
+      R( e, f, g, h, a, b, c, d, K(36), M(36) );
+      R( d, e, f, g, h, a, b, c, K(37), M(37) );
+      R( c, d, e, f, g, h, a, b, K(38), M(38) );
+      R( b, c, d, e, f, g, h, a, K(39), M(39) );
+      R( a, b, c, d, e, f, g, h, K(40), M(40) );
+      R( h, a, b, c, d, e, f, g, K(41), M(41) );
+      R( g, h, a, b, c, d, e, f, K(42), M(42) );
+      R( f, g, h, a, b, c, d, e, K(43), M(43) );
+      R( e, f, g, h, a, b, c, d, K(44), M(44) );
+      R( d, e, f, g, h, a, b, c, K(45), M(45) );
+      R( c, d, e, f, g, h, a, b, K(46), M(46) );
+      R( b, c, d, e, f, g, h, a, K(47), M(47) );
+      R( a, b, c, d, e, f, g, h, K(48), M(48) );
+      R( h, a, b, c, d, e, f, g, K(49), M(49) );
+      R( g, h, a, b, c, d, e, f, K(50), M(50) );
+      R( f, g, h, a, b, c, d, e, K(51), M(51) );
+      R( e, f, g, h, a, b, c, d, K(52), M(52) );
+      R( d, e, f, g, h, a, b, c, K(53), M(53) );
+      R( c, d, e, f, g, h, a, b, K(54), M(54) );
+      R( b, c, d, e, f, g, h, a, K(55), M(55) );
+      R( a, b, c, d, e, f, g, h, K(56), M(56) );
+      R( h, a, b, c, d, e, f, g, K(57), M(57) );
+      R( g, h, a, b, c, d, e, f, K(58), M(58) );
+      R( f, g, h, a, b, c, d, e, K(59), M(59) );
+      R( e, f, g, h, a, b, c, d, K(60), M(60) );
+      R( d, e, f, g, h, a, b, c, K(61), M(61) );
+      R( c, d, e, f, g, h, a, b, K(62), M(62) );
+      R( b, c, d, e, f, g, h, a, K(63), M(63) );
+
+      a = ctx->state[0] += a;
+      b = ctx->state[1] += b;
+      c = ctx->state[2] += c;
+      d = ctx->state[3] += d;
+      e = ctx->state[4] += e;
+      f = ctx->state[5] += f;
+      g = ctx->state[6] += g;
+      h = ctx->state[7] += h;
+    }
+}
+
+#endif
+
+/*
+ * Hey Emacs!
+ * Local Variables:
+ * coding: utf-8
+ * End:
+ */
diff --git a/gl/sha256.h b/gl/sha256.h
new file mode 100644
index 0000000..2879477
--- /dev/null
+++ b/gl/sha256.h
@@ -0,0 +1,121 @@
+/* Declarations of functions and data types used for SHA256 and SHA224 sum
+   library functions.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef SHA256_H
+# define SHA256_H 1
+
+# include <stdio.h>
+# include <stdint.h>
+
+# if HAVE_OPENSSL_SHA256
+#  ifndef OPENSSL_API_COMPAT
+#   define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API.  */
+#  endif
+#  include <openssl/sha.h>
+# endif
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+enum { SHA224_DIGEST_SIZE = 224 / 8 };
+enum { SHA256_DIGEST_SIZE = 256 / 8 };
+
+# if HAVE_OPENSSL_SHA256
+#  define GL_OPENSSL_NAME 224
+#  include "gl_openssl.h"
+#  define GL_OPENSSL_NAME 256
+#  include "gl_openssl.h"
+# else
+/* Structure to save state of computation between the single steps.  */
+struct sha256_ctx
+{
+  uint32_t state[8];
+
+  uint32_t total[2];
+  size_t buflen;       /* ≥ 0, ≤ 128 */
+  uint32_t buffer[32]; /* 128 bytes; the first buflen bytes are in use */
+};
+
+/* Initialize structure containing state of computation. */
+extern void sha256_init_ctx (struct sha256_ctx *ctx);
+extern void sha224_init_ctx (struct sha256_ctx *ctx);
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is necessary that LEN is a multiple of 64!!! */
+extern void sha256_process_block (const void *buffer, size_t len,
+                                  struct sha256_ctx *ctx);
+
+/* Starting with the result of former calls of this function (or the
+   initialization function update the context for the next LEN bytes
+   starting at BUFFER.
+   It is NOT required that LEN is a multiple of 64.  */
+extern void sha256_process_bytes (const void *buffer, size_t len,
+                                  struct sha256_ctx *ctx);
+
+/* Process the remaining bytes in the buffer and put result from CTX
+   in first 32 (28) bytes following RESBUF.  The result is always in little
+   endian byte order, so that a byte-wise output yields to the wanted
+   ASCII representation of the message digest.  */
+extern void *sha256_finish_ctx (struct sha256_ctx *ctx, void *restrict resbuf);
+extern void *sha224_finish_ctx (struct sha256_ctx *ctx, void *restrict resbuf);
+
+
+/* Put result from CTX in first 32 (28) bytes following RESBUF.  The result is
+   always in little endian byte order, so that a byte-wise output yields
+   to the wanted ASCII representation of the message digest.  */
+extern void *sha256_read_ctx (const struct sha256_ctx *ctx,
+                              void *restrict resbuf);
+extern void *sha224_read_ctx (const struct sha256_ctx *ctx,
+                              void *restrict resbuf);
+
+
+/* Compute SHA256 (SHA224) message digest for LEN bytes beginning at BUFFER.
+   The result is always in little endian byte order, so that a byte-wise
+   output yields to the wanted ASCII representation of the message
+   digest.  */
+extern void *sha256_buffer (const char *buffer, size_t len,
+                            void *restrict resblock);
+extern void *sha224_buffer (const char *buffer, size_t len,
+                            void *restrict resblock);
+
+# endif
+
+/* Compute SHA256 (SHA224) message digest for bytes read from STREAM.
+   STREAM is an open file stream.  Regular files are handled more efficiently.
+   The contents of STREAM from its current position to its end will be read.
+   The case that the last operation on STREAM was an 'ungetc' is not supported.
+   The resulting message digest number will be written into the 32 (28) bytes
+   beginning at RESBLOCK.  */
+extern int sha256_stream (FILE *stream, void *resblock);
+extern int sha224_stream (FILE *stream, void *resblock);
+
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/*
+ * Hey Emacs!
+ * Local Variables:
+ * coding: utf-8
+ * End:
+ */
diff --git a/gl/stdckdint.h b/gl/stdckdint.h
new file mode 100644
index 0000000..edcda29
--- /dev/null
+++ b/gl/stdckdint.h
@@ -0,0 +1,36 @@
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* stdckdint.h -- checked integer arithmetic
+
+   Copyright 2022-2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#ifndef _GL_STDCKDINT_H
+#define _GL_STDCKDINT_H
+
+#include "intprops-internal.h"
+
+/* Store into *R the low-order bits of A + B, A - B, A * B, respectively.
+   Return 1 if the result overflows, 0 otherwise.
+   A, B, and *R can have any integer type other than char, bool, a
+   bit-precise integer type, or an enumeration type.
+
+   These are like the standard macros introduced in C23, except that
+   arguments should not have side effects.  */
+
+#define ckd_add(r, a, b) ((bool) _GL_INT_ADD_WRAPV (a, b, r))
+#define ckd_sub(r, a, b) ((bool) _GL_INT_SUBTRACT_WRAPV (a, b, r))
+#define ckd_mul(r, a, b) ((bool) _GL_INT_MULTIPLY_WRAPV (a, b, r))
+
+#endif /* _GL_STDCKDINT_H */
-- 
cgit v0.10-9-g596f