From 8a34866d978e4281d69104372056ba0211d1373a Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@redhat.com>
Date: Tue, 31 Aug 2010 12:20:05 +0200
Subject: [PATCH] Don't parse %s format argument as multibyte string
[BZ #6530]
* stdio-common/vfprintf.c (process_string_arg): Revert 2000-07-22
change.
---
ChangeLog | 4 ++++
stdio-common/vfprintf.c | 40 ++++------------------------------------
2 files changed, 8 insertions(+), 36 deletions(-)
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -1168,42 +1168,9 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
else if (!is_long && spec != L_('S')) \
{ \
if (prec != -1) \
- { \
- /* Search for the end of the string, but don't search past \
- the length (in bytes) specified by the precision. Also \
- don't use incomplete characters. */ \
- if (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MB_CUR_MAX) == 1) \
- len = __strnlen (string, prec); \
- else \
- { \
- /* In case we have a multibyte character set the \
- situation is more complicated. We must not copy \
- bytes at the end which form an incomplete character. */\
- size_t ignore_size = (unsigned) prec > 1024 ? 1024 : prec;\
- wchar_t ignore[ignore_size]; \
- const char *str2 = string; \
- const char *strend = string + prec; \
- if (strend < string) \
- strend = (const char *) UINTPTR_MAX; \
- \
- mbstate_t ps; \
- memset (&ps, '\0', sizeof (ps)); \
- \
- while (str2 != NULL && str2 < strend) \
- if (__mbsnrtowcs (ignore, &str2, strend - str2, \
- ignore_size, &ps) == (size_t) -1) \
- { \
- /* Conversion function has set errno. */ \
- done = -1; \
- goto all_done; \
- } \
- \
- if (str2 == NULL) \
- len = strlen (string); \
- else \
- len = str2 - string - (ps.__count & 7); \
- } \
- } \
+ /* Search for the end of the string, but don't search past \
+ the length (in bytes) specified by the precision. */ \
+ len = __strnlen (string, prec); \
else \
len = strlen (string); \
} \