diff options
Diffstat (limited to 'libio/putc.c')
| -rw-r--r-- | libio/putc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libio/putc.c b/libio/putc.c index b591c5538b..6e1fdeef3a 100644 --- a/libio/putc.c +++ b/libio/putc.c @@ -25,6 +25,8 @@ _IO_putc (int c, _IO_FILE *fp) { int result; CHECK_FILE (fp, EOF); + if (!_IO_need_lock (fp)) + return _IO_putc_unlocked (c, fp); _IO_acquire_lock (fp); result = _IO_putc_unlocked (c, fp); _IO_release_lock (fp); |