diff options
| -rw-r--r-- | src/stdio/setvbuf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/stdio/setvbuf.c b/src/stdio/setvbuf.c index 06ea296c..523dddc8 100644 --- a/src/stdio/setvbuf.c +++ b/src/stdio/setvbuf.c @@ -12,13 +12,15 @@ int setvbuf(FILE *restrict f, char *restrict buf, int type, size_t size) if (type == _IONBF) { f->buf_size = 0; - } else { + } else if (type == _IOLBF || type == _IOFBF) { if (buf && size >= UNGET) { f->buf = (void *)(buf + UNGET); f->buf_size = size - UNGET; } if (type == _IOLBF && f->buf_size) f->lbf = '\n'; + } else { + return -1; } f->flags |= F_SVB; |