1 files changed, 42 insertions, 5 deletions

diff --git a/gl/mbrtowc.c b/gl/mbrtowc.c
index 603f0060..0fec5f1c 100644
--- a/gl/mbrtowc.c
+++ b/gl/mbrtowc.c
@@ -1,5 +1,5 @@
 /* Convert multibyte character to wide character.
-   Copyright (C) 1999-2002, 2005-2008 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2005-2009 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This program is free software: you can redistribute it and/or modify
@@ -89,7 +89,7 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
         return (size_t)(-1);
       }
 
-    /* Here 0 < m ≤ 4.  */
+    /* Here m > 0.  */
 
 # if __GLIBC__
     /* Work around bug <http://sourceware.org/bugzilla/show_bug.cgi?id=9674> */
@@ -118,7 +118,7 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
          lack mbrtowc(), we use the second approach.
          The possible encodings are:
            - 8-bit encodings,
-           - EUC-JP, EUC-KR, GB2312, EUC-TW, BIG5, SJIS,
+           - EUC-JP, EUC-KR, GB2312, EUC-TW, BIG5, GB18030, SJIS,
            - UTF-8.
          Use specialized code for each.  */
       if (m >= 4 || m >= MB_CUR_MAX)
@@ -238,6 +238,39 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
               }
             goto invalid;
           }
+        if (STREQ (encoding, "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0))
+          {
+            if (m == 1)
+              {
+                unsigned char c = (unsigned char) p[0];
+
+                if ((c >= 0x90 && c <= 0xe3) || (c >= 0xf8 && c <= 0xfe))
+                  goto incomplete;
+              }
+            else /* m == 2 || m == 3 */
+              {
+                unsigned char c = (unsigned char) p[0];
+
+                if (c >= 0x90 && c <= 0xe3)
+                  {
+                    unsigned char c2 = (unsigned char) p[1];
+
+                    if (c2 >= 0x30 && c2 <= 0x39)
+                      {
+                        if (m == 2)
+                          goto incomplete;
+                        else /* m == 3 */
+                          {
+                            unsigned char c3 = (unsigned char) p[2];
+
+                            if (c3 >= 0x81 && c3 <= 0xfe)
+                              goto incomplete;
+                          }
+                      }
+                  }
+              }
+            goto invalid;
+          }
         if (STREQ (encoding, "SJIS", 'S', 'J', 'I', 'S', 0, 0, 0, 0, 0))
           {
             if (m == 1)
@@ -258,10 +291,14 @@ mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
      incomplete:
       {
         size_t k = nstate;
-        /* Here 0 < k < m < 4.  */
+        /* Here 0 <= k < m < 4.  */
         pstate[++k] = s[0];
         if (k < m)
-          pstate[++k] = s[1];
+          {
+            pstate[++k] = s[1];
+            if (k < m)
+              pstate[++k] = s[2];
+          }
         if (k != m)
           abort ();
       }