diff options
Diffstat (limited to 'lib/vasnprintf.c')
-rw-r--r-- | lib/vasnprintf.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c index 87b8a55b99..18c5e39e80 100644 --- a/lib/vasnprintf.c +++ b/lib/vasnprintf.c @@ -4847,8 +4847,9 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp, fbp[3] = '\0'; # else /* On glibc2 systems from glibc >= 2.3 - probably also older - ones - we know that snprintf's returns value conforms to - ISO C 99: the gl_SNPRINTF_DIRECTIVE_N test passes. + ones - we know that snprintf's return value conforms to + ISO C 99: the tests gl_SNPRINTF_RETVAL_C99 and + gl_SNPRINTF_TRUNCATION_C99 pass. Therefore we can avoid using %n in this situation. On glibc2 systems from 2004-10-18 or newer, the use of %n in format strings in writable memory may crash the program |