diff options
Diffstat (limited to 'stdlib/strfmon.c')
| -rw-r--r-- | stdlib/strfmon.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/stdlib/strfmon.c b/stdlib/strfmon.c index 54771049ad..c956ae3040 100644 --- a/stdlib/strfmon.c +++ b/stdlib/strfmon.c @@ -170,6 +170,13 @@ __strfmon_l (char *s, size_t maxsize, __locale_t loc, const char *format, ...) { case '=': /* Set fill character. */ pad = *++fmt; + if (pad == '\0') + { + /* Premature EOS. */ + __set_errno (EINVAL); + va_end (ap); + return -1; + } continue; case '^': /* Don't group digits. */ group = 0; |