diff options
| -rw-r--r-- | src/stdio/vfprintf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c index af069d13..2100eb5e 100644 --- a/src/stdio/vfprintf.c +++ b/src/stdio/vfprintf.c @@ -678,7 +678,8 @@ int vfprintf(FILE *restrict f, const char *restrict fmt, va_list ap) f->buf_size = sizeof internal_buf; f->wpos = f->wbase = f->wend = 0; } - ret = printf_core(f, fmt, &ap2, nl_arg, nl_type); + if (!f->wend && __towrite(f)) ret = -1; + else ret = printf_core(f, fmt, &ap2, nl_arg, nl_type); if (saved_buf) { f->write(f, 0, 0); if (!f->wpos) ret = -1; |