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Fixed bug 4525 - Fix crash in ALSA_HotplugThread caused by bad return value check

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Anthony Pesch

Fix snd_device_name_hint return value check

According to the ALSA documentation, snd_device_name_hint returns 0 on
success, otherwise a negative error code. The code previously only
considered -1 to be an error, which let other error codes through
resulting in a segfault when hints (which was NULL) was dereferenced
This commit is contained in:
Sam Lantinga 2019-03-16 18:48:21 -07:00
parent 55f18d3625
commit 35255342cd
1 changed files with 1 additions and 1 deletions
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2
src/audio/alsa/SDL_alsa_audio.c
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@ -788,7 +788,7 @@ ALSA_HotplugThread(void *arg)
ALSA_Device *seen; ALSA_Device *seen;
ALSA_Device *prev; ALSA_Device *prev;
if (ALSA_snd_device_name_hint(-1, "pcm", &hints) != -1) { if (ALSA_snd_device_name_hint(-1, "pcm", &hints) == 0) {
int i, j; int i, j;
const char *match = NULL; const char *match = NULL;
int bestmatch = 0xFFFF; int bestmatch = 0xFFFF;