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| author | Ulrich Drepper <drepper@redhat.com> | 1999-08-17 01:06:30 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1999-08-17 01:06:30 +0000 |
| commit | 22318b7b137c63cb1512f286d3c2a2a42cec561f (patch) | |
| tree | a9756d50d5f49742bf5a4c9f5ca7c5f3ba045729 /stdio-common/vfprintf.c | |
| parent | c9ade7e27fe7aa505cab2935b424d2187c38b8b8 (diff) | |
| download | glibc-22318b7b137c63cb1512f286d3c2a2a42cec561f.zip glibc-22318b7b137c63cb1512f286d3c2a2a42cec561f.tar.gz glibc-22318b7b137c63cb1512f286d3c2a2a42cec561f.tar.bz2 | |
Update.
* stdio-common/vfprintf.c (process_string_arg) [printf]: Handle
possibly unterminated strings for %ls when a precision is
specified.
Patch by Akira YOSHIYAMA <yosshy@tkf.att.ne.jp>.
Diffstat (limited to 'stdio-common/vfprintf.c')
| -rw-r--r-- | stdio-common/vfprintf.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c index d140426..780ac76 100644 --- a/stdio-common/vfprintf.c +++ b/stdio-common/vfprintf.c @@ -1105,21 +1105,31 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap) mbstate_t mbstate; \ \ memset (&mbstate, '\0', sizeof (mbstate_t)); \ - len = __wcsrtombs (NULL, &s2, 0, &mbstate); \ + \ + if (prec > 0) \ + { \ + /* The string `s2' might not be NUL terminated. */ \ + string = (char *) alloca (prec + 1); \ + len = __wcsrtombs (string, &s2, prec + 1, &mbstate); \ + } \ + else \ + { \ + len = __wcsrtombs (NULL, &s2, 0, &mbstate); \ + if (len != (size_t) -1) \ + { \ + assert (__mbsinit (&mbstate)); \ + s2 = (const wchar_t *) string; \ + string = (char *) alloca (len + 1); \ + (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \ + } \ + } \ + \ if (len == (size_t) -1) \ { \ /* Illegal wide-character string. */ \ done = -1; \ goto all_done; \ } \ - \ - assert (__mbsinit (&mbstate)); \ - s2 = (const wchar_t *) string; \ - string = alloca (len + 1); \ - if (prec > 0 && prec < len) \ - len = __wcsrtombs (string, &s2, prec, &mbstate); \ - else \ - (void) __wcsrtombs (string, &s2, len + 1, &mbstate); \ } \ \ if ((width -= len) < 0) \ |