diff options
Diffstat (limited to 'strftime.c')
| -rw-r--r-- | strftime.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/strftime.c b/strftime.c index dc6df615d7..9d9f48d0de 100644 --- a/strftime.c +++ b/strftime.c @@ -237,6 +237,10 @@ rb_strftime_with_timespec(char *s, size_t maxsize, const char *format, const str i = rb_strftime_with_timespec(s, endp - s, (fmt), vtm, timev, ts, gmt); \ if (!i) return 0; \ if (precision > i) {\ + if (start + maxsize < s + precision) { \ + errno = ERANGE; \ + return 0; \ + } \ memmove(s + precision - i, s, i);\ memset(s, padding ? padding : ' ', precision - i); \ s += precision; \ |