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authorRich Felker <dalias@aerifal.cx>2018-11-02 12:52:56 -0400
committerRich Felker <dalias@aerifal.cx>2018-11-02 12:52:56 -0400
commit79f653c6bc2881dd6855299c908a442f56cb7c2b (patch)
treec859e6f759efbaa7f434c15d847dd7f28044da8a
parent4a086030264f5cf423ea76453ef721e2c8e2e093 (diff)
downloadmusl-79f653c6bc2881dd6855299c908a442f56cb7c2b.tar.gz
fix failure to flush stderr when fflush(0) is called
commit ddc947eda311331959c73dbc4491afcfe2326346 fixed the corresponding bug for exit which was introduced when commit 0b80a7b0404b6e49b0b724e3e3fe0ed5af3b08ef added support for caller-provided buffers, making it possible for stderr to be a buffered stream.
-rw-r--r--src/stdio/fflush.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/stdio/fflush.c b/src/stdio/fflush.c
index 02dae27a..b0094376 100644
--- a/src/stdio/fflush.c
+++ b/src/stdio/fflush.c
@@ -3,11 +3,14 @@
/* stdout.c will override this if linked */
static FILE *volatile dummy = 0;
weak_alias(dummy, __stdout_used);
+weak_alias(dummy, __stderr_used);
int fflush(FILE *f)
{
if (!f) {
- int r = __stdout_used ? fflush(__stdout_used) : 0;
+ int r = 0;
+ if (__stdout_used) r |= fflush(__stdout_used);
+ if (__stderr_used) r |= fflush(__stderr_used);
for (f=*__ofl_lock(); f; f=f->next) {
FLOCK(f);