Signed-off-by: David Fries David@Fries.net Reviewed-by: Takashi Iwai tiwai@suse.de --- Added signed off.

I saw this when digging through the source code, wrote up a test case, and verified with valgrind. I don't have that many sound cards so I modified mixer.c to always take the conditional. alloca seemed like the least effort way to fix this. Other thoughts were to test pfds != spfds and free, but given how little bytes would be allocated putting on the stack seems reasonable.

I also created the github pull request 20. https://github.com/alsa-project/alsa-lib/pull/20

src/mixer/mixer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mixer/mixer.c b/src/mixer/mixer.c index 82056474..b1af9945 100644 --- a/src/mixer/mixer.c +++ b/src/mixer/mixer.c @@ -767,7 +767,7 @@ int snd_mixer_wait(snd_mixer_t *mixer, int timeout) if (count < 0) return count; if ((unsigned int) count > sizeof(spfds) / sizeof(spfds[0])) { - pfds = malloc(count * sizeof(*pfds)); + pfds = alloca(count * sizeof(*pfds)); if (!pfds) return -ENOMEM; err = snd_mixer_poll_descriptors(mixer, pfds,