2005-05-19 Jakub Jelinek <jakub@redhat.com>

	[BZ #955]
	* iconvdata/ibm939.c (BODY): Avoid segfaults with input characters
	<UFFFF> and above.

diff --git a/iconvdata/ibm939.c b/iconvdata/ibm939.c
index aae08ba3d10326b9a7d96de792a10551002b77f9..50b083f4925067d620d6c38180f13f4730d20b23 100644 (file)
--- a/iconvdata/ibm939.c
+++ b/iconvdata/ibm939.c
@@ -1,5 +1,5 @@
 /* Conversion to and from IBM939.
-   Copyright (C) 2000-2002 Free Software Foundation, Inc.
+   Copyright (C) 2000-2002, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Masahide Washizawa <washi@yamato.ibm.co.jp>, 2000.
 
@@ -200,16 +200,14 @@ enum
     if (__builtin_expect (ch >= 0xffff, 0))                                  \
       {                                                                              \
        UNICODE_TAG_HANDLER (ch, 4);                                          \
-       rp1 = NULL;                                                           \
-       rp2 = NULL;                                                           \
+       goto ibm939_invalid_char;                                             \
       }                                                                              \
-    else                                                                     \
-      while (ch > rp1->end)                                                  \
-       ++rp1;                                                                \
+                                                                             \
+    while (ch > rp1->end)                                                    \
+      ++rp1;                                                                 \
                                                                              \
     /* Use the UCS4 table for single byte.  */                               \
-    if (__builtin_expect (rp1 == NULL, 0)                                    \
-       || __builtin_expect (ch < rp1->start, 0)                              \
+    if (__builtin_expect (ch < rp1->start, 0)                                \
        || (cp = __ucs4_to_ibm939sb[ch + rp1->idx],                           \
            __builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0'))          \
       {                                                                              \
@@ -217,12 +215,12 @@ enum
        while (ch > rp2->end)                                                 \
          ++rp2;                                                              \
                                                                              \
-       if (__builtin_expect (rp2 == NULL, 0)                                 \
-           || __builtin_expect (ch < rp2->start, 0)                          \
+       if (__builtin_expect (ch < rp2->start, 0)                             \
            || (cp = __ucs4_to_ibm939db[ch + rp2->idx],                       \
                __builtin_expect (cp[0], L'\1')==L'\0' && ch != '\0'))        \
          {                                                                   \
            /* This is an illegal character.  */                              \
+         ibm939_invalid_char:                                                \
            STANDARD_TO_LOOP_ERR_HANDLER (4);                                 \
          }                                                                   \
        else                                                                  \