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authorUlrich Drepper <drepper@redhat.com>2000-07-22 07:02:05 +0000
committerUlrich Drepper <drepper@redhat.com>2000-07-22 07:02:05 +0000
commit40c014b3dcc698ae2cc935aefabbeb2196088128 (patch)
treead1ae53dfe308220ec4fc6d32521986d627891c6 /stdio-common/vfprintf.c
parentc056ee48cbf7d3fc88d840af64d75c68ac281519 (diff)
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Update.
2000-07-22 Ulrich Drepper <drepper@redhat.com> * stdio-common/vfprintf.c (process_string_arg): Correct handling of multibyte character strings in %s format with precision.
Diffstat (limited to 'stdio-common/vfprintf.c')
-rw-r--r--stdio-common/vfprintf.c31
1 files changed, 28 insertions, 3 deletions
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index 23981d18cd..1682b0b6ce 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -1142,9 +1142,34 @@ 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 specified by the precision. */ \
- len = __strnlen (string, prec); \
+ { \
+ /* 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 compilcated. We must not copy \
+ bytes at the end which form an incomplete character. */\
+ wchar_t ignore[prec]; \
+ const char *str2 = string; \
+ mbstate_t ps; \
+ \
+ memset (&ps, '\0', sizeof (ps)); \
+ if (__mbsnrtowcs (ignore, &str2, prec, prec, &ps) \
+ == (size_t) -1) \
+ { \
+ done = -1; \
+ goto all_done; \
+ } \
+ if (str2 == NULL) \
+ len = strlen (string); \
+ else \
+ len = str2 - string - (ps.__count); \
+ } \
+ } \
else \
len = strlen (string); \
} \