1 files changed, 142 insertions, 133 deletions

diff --git a/gl/m4/regex.m4 b/gl/m4/regex.m4
index aef53d29..95784e4b 100644
--- a/gl/m4/regex.m4
+++ b/gl/m4/regex.m4
@@ -1,7 +1,7 @@
-# serial 54
+# serial 56
 
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
+# 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -18,146 +18,154 @@ AC_DEFUN([gl_REGEX],
 
   AC_ARG_WITH([included-regex],
     [AS_HELP_STRING([--without-included-regex],
-                    [don't compile regex; this is the default on systems
-                     with recent-enough versions of the GNU C Library
-                     (use with caution on other systems).])])
+                    [don't compile regex; this is the default on systems
+                     with recent-enough versions of the GNU C Library
+                     (use with caution on other systems).])])
 
   case $with_included_regex in #(
   yes|no) ac_use_included_regex=$with_included_regex
-        ;;
+        ;;
   '')
     # If the system regex support is good enough that it passes the
     # following run test, then default to *not* using the included regex.c.
     # If cross compiling, assume the test would fail and use the included
     # regex.c.
     AC_CACHE_CHECK([for working re_compile_pattern],
-                   [gl_cv_func_re_compile_pattern_working],
+                   [gl_cv_func_re_compile_pattern_working],
       [AC_RUN_IFELSE(
-        [AC_LANG_PROGRAM(
-          [AC_INCLUDES_DEFAULT[
-           #if HAVE_LOCALE_H
-            #include <locale.h>
-           #endif
-           #include <limits.h>
-           #include <regex.h>
-           ]],
-          [[static struct re_pattern_buffer regex;
-            unsigned char folded_chars[UCHAR_MAX + 1];
-            int i;
-            const char *s;
-            struct re_registers regs;
-
-            #if HAVE_LOCALE_H
-              /* http://sourceware.org/ml/libc-hacker/2006-09/msg00008.html
-                 This test needs valgrind to catch the bug on Debian
-                 GNU/Linux 3.1 x86, but it might catch the bug better
-                 on other platforms and it shouldn't hurt to try the
-                 test here.  */
-              if (setlocale (LC_ALL, "en_US.UTF-8"))
-                {
-                  static char const pat[] = "insert into";
-                  static char const data[] =
-                    "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK";
-                  re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE
-                                 | RE_ICASE);
-                  memset (&regex, 0, sizeof regex);
-                  s = re_compile_pattern (pat, sizeof pat - 1, &regex);
-                  if (s)
-                    return 1;
-                  if (re_search (&regex, data, sizeof data - 1,
-                                 0, sizeof data - 1, &regs)
-                      != -1)
-                    return 1;
-                  if (! setlocale (LC_ALL, "C"))
-                    return 1;
-                }
-            #endif
-
-            /* This test is from glibc bug 3957, reported by Andrew Mackey.  */
-            re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE);
-            memset (&regex, 0, sizeof regex);
-            s = re_compile_pattern ("a[^x]b", 6, &regex);
-            if (s)
-              return 1;
-
-            /* This should fail, but succeeds for glibc-2.5.  */
-            if (re_search (&regex, "a\nb", 3, 0, 3, &regs) != -1)
-              return 1;
-
-            /* This regular expression is from Spencer ere test number 75
-               in grep-2.3.  */
-            re_set_syntax (RE_SYNTAX_POSIX_EGREP);
-            memset (&regex, 0, sizeof regex);
-            for (i = 0; i <= UCHAR_MAX; i++)
-              folded_chars[i] = i;
-            regex.translate = folded_chars;
-            s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, &regex);
-            /* This should fail with _Invalid character class name_ error.  */
-            if (!s)
-              return 1;
-
-            /* This should succeed, but does not for glibc-2.1.3.  */
-            memset (&regex, 0, sizeof regex);
-            s = re_compile_pattern ("{1", 2, &regex);
-
-            if (s)
-              return 1;
-
-            /* The following example is derived from a problem report
-               against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>.  */
-            memset (&regex, 0, sizeof regex);
-            s = re_compile_pattern ("[an\371]*n", 7, &regex);
-            if (s)
-              return 1;
-
-            /* This should match, but does not for glibc-2.2.1.  */
-            if (re_match (&regex, "an", 2, 0, &regs) != 2)
-              return 1;
-
-            memset (&regex, 0, sizeof regex);
-            s = re_compile_pattern ("x", 1, &regex);
-            if (s)
-              return 1;
-
-            /* glibc-2.2.93 does not work with a negative RANGE argument.  */
-            if (re_search (&regex, "wxy", 3, 2, -2, &regs) != 1)
-              return 1;
-
-            /* The version of regex.c in older versions of gnulib
-               ignored RE_ICASE.  Detect that problem too.  */
-            re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE);
-            memset (&regex, 0, sizeof regex);
-            s = re_compile_pattern ("x", 1, &regex);
-            if (s)
-              return 1;
-
-            if (re_search (&regex, "WXY", 3, 0, 3, &regs) < 0)
-              return 1;
-
-            /* Catch a bug reported by Vin Shelton in
-               http://lists.gnu.org/archive/html/bug-coreutils/2007-06/msg00089.html
-               */
-            re_set_syntax (RE_SYNTAX_POSIX_BASIC
-                           & ~RE_CONTEXT_INVALID_DUP
-                           & ~RE_NO_EMPTY_RANGES);
-            memset (&regex, 0, sizeof regex);
-            s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, &regex);
-            if (s)
-              return 1;
-
-            /* REG_STARTEND was added to glibc on 2004-01-15.
-               Reject older versions.  */
-            if (! REG_STARTEND)
-              return 1;
-
-            /* Reject hosts whose regoff_t values are too narrow.
-               These include glibc 2.3.5 on hosts with 64-bit ptrdiff_t
-               and 32-bit int.  */
-            if (sizeof (regoff_t) < sizeof (ptrdiff_t)
-                || sizeof (regoff_t) < sizeof (ssize_t))
-              return 1;
-
-            return 0;]])],
+        [AC_LANG_PROGRAM(
+          [AC_INCLUDES_DEFAULT[
+           #if HAVE_LOCALE_H
+            #include <locale.h>
+           #endif
+           #include <limits.h>
+           #include <regex.h>
+           ]],
+          [[static struct re_pattern_buffer regex;
+            unsigned char folded_chars[UCHAR_MAX + 1];
+            int i;
+            const char *s;
+            struct re_registers regs;
+
+            #if HAVE_LOCALE_H
+              /* http://sourceware.org/ml/libc-hacker/2006-09/msg00008.html
+                 This test needs valgrind to catch the bug on Debian
+                 GNU/Linux 3.1 x86, but it might catch the bug better
+                 on other platforms and it shouldn't hurt to try the
+                 test here.  */
+              if (setlocale (LC_ALL, "en_US.UTF-8"))
+                {
+                  static char const pat[] = "insert into";
+                  static char const data[] =
+                    "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK";
+                  re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE
+                                 | RE_ICASE);
+                  memset (&regex, 0, sizeof regex);
+                  s = re_compile_pattern (pat, sizeof pat - 1, &regex);
+                  if (s)
+                    return 1;
+                  if (re_search (&regex, data, sizeof data - 1,
+                                 0, sizeof data - 1, &regs)
+                      != -1)
+                    return 1;
+                  if (! setlocale (LC_ALL, "C"))
+                    return 1;
+                }
+            #endif
+
+            /* This test is from glibc bug 3957, reported by Andrew Mackey.  */
+            re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("a[^x]b", 6, &regex);
+            if (s)
+              return 1;
+
+            /* This should fail, but succeeds for glibc-2.5.  */
+            if (re_search (&regex, "a\nb", 3, 0, 3, &regs) != -1)
+              return 1;
+
+            /* This regular expression is from Spencer ere test number 75
+               in grep-2.3.  */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP);
+            memset (&regex, 0, sizeof regex);
+            for (i = 0; i <= UCHAR_MAX; i++)
+              folded_chars[i] = i;
+            regex.translate = folded_chars;
+            s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, &regex);
+            /* This should fail with _Invalid character class name_ error.  */
+            if (!s)
+              return 1;
+
+            /* Ensure that [b-a] is diagnosed as invalid, when
+               using RE_NO_EMPTY_RANGES. */
+            re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("a[b-a]", 6, &regex);
+            if (s == 0)
+              return 1;
+
+            /* This should succeed, but does not for glibc-2.1.3.  */
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("{1", 2, &regex);
+
+            if (s)
+              return 1;
+
+            /* The following example is derived from a problem report
+               against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>.  */
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("[an\371]*n", 7, &regex);
+            if (s)
+              return 1;
+
+            /* This should match, but does not for glibc-2.2.1.  */
+            if (re_match (&regex, "an", 2, 0, &regs) != 2)
+              return 1;
+
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("x", 1, &regex);
+            if (s)
+              return 1;
+
+            /* glibc-2.2.93 does not work with a negative RANGE argument.  */
+            if (re_search (&regex, "wxy", 3, 2, -2, &regs) != 1)
+              return 1;
+
+            /* The version of regex.c in older versions of gnulib
+               ignored RE_ICASE.  Detect that problem too.  */
+            re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("x", 1, &regex);
+            if (s)
+              return 1;
+
+            if (re_search (&regex, "WXY", 3, 0, 3, &regs) < 0)
+              return 1;
+
+            /* Catch a bug reported by Vin Shelton in
+               http://lists.gnu.org/archive/html/bug-coreutils/2007-06/msg00089.html
+               */
+            re_set_syntax (RE_SYNTAX_POSIX_BASIC
+                           & ~RE_CONTEXT_INVALID_DUP
+                           & ~RE_NO_EMPTY_RANGES);
+            memset (&regex, 0, sizeof regex);
+            s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, &regex);
+            if (s)
+              return 1;
+
+            /* REG_STARTEND was added to glibc on 2004-01-15.
+               Reject older versions.  */
+            if (! REG_STARTEND)
+              return 1;
+
+            /* Reject hosts whose regoff_t values are too narrow.
+               These include glibc 2.3.5 on hosts with 64-bit ptrdiff_t
+               and 32-bit int.  */
+            if (sizeof (regoff_t) < sizeof (ptrdiff_t)
+                || sizeof (regoff_t) < sizeof (ssize_t))
+              return 1;
+
+            return 0;]])],
        [gl_cv_func_re_compile_pattern_working=yes],
        [gl_cv_func_re_compile_pattern_working=no],
        dnl When crosscompiling, assume it is not working.
@@ -213,6 +221,7 @@ AC_DEFUN([gl_REGEX],
 AC_DEFUN([gl_PREREQ_REGEX],
 [
   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([AC_C_INLINE])
   AC_REQUIRE([AC_C_RESTRICT])
   AC_REQUIRE([AC_TYPE_MBSTATE_T])
   AC_CHECK_HEADERS([libintl.h])