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Placate gcc's strict aliasing rules with an extra cast.
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 Casts to (char *) will disable strict aliasing when the compiler sees it.
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@icculus
icculus committed Oct 20, 2005
1 parent 27a1382 commit fd3d767
Showing 1 changed file with 19 additions and 18 deletions.
37 changes: 19 additions & 18 deletions src/audio/alsa/SDL_alsa_audio.c
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Expand Up @@ -93,28 +93,29 @@ static int (*SDL_NAME(snd_pcm_hw_params))(snd_pcm_t *pcm, snd_pcm_hw_params_t *p
static int (*SDL_NAME(snd_pcm_nonblock))(snd_pcm_t *pcm, int nonblock);
#define snd_pcm_hw_params_sizeof SDL_NAME(snd_pcm_hw_params_sizeof)

/* cast funcs to char* first, to please GCC's strict aliasing rules. */
static struct {
const char *name;
void **func;
} alsa_functions[] = {
{ "snd_pcm_open", (void**)&SDL_NAME(snd_pcm_open) },
{ "snd_pcm_close", (void**)&SDL_NAME(snd_pcm_close) },
{ "snd_pcm_writei", (void**)&SDL_NAME(snd_pcm_writei) },
{ "snd_pcm_resume", (void**)&SDL_NAME(snd_pcm_resume) },
{ "snd_pcm_prepare", (void**)&SDL_NAME(snd_pcm_prepare) },
{ "snd_pcm_drain", (void**)&SDL_NAME(snd_pcm_drain) },
{ "snd_strerror", (void**)&SDL_NAME(snd_strerror) },
{ "snd_pcm_hw_params_sizeof", (void**)&SDL_NAME(snd_pcm_hw_params_sizeof) },
{ "snd_pcm_hw_params_any", (void**)&SDL_NAME(snd_pcm_hw_params_any) },
{ "snd_pcm_hw_params_set_access", (void**)&SDL_NAME(snd_pcm_hw_params_set_access) },
{ "snd_pcm_hw_params_set_format", (void**)&SDL_NAME(snd_pcm_hw_params_set_format) },
{ "snd_pcm_hw_params_set_channels", (void**)&SDL_NAME(snd_pcm_hw_params_set_channels) },
{ "snd_pcm_hw_params_get_channels", (void**)&SDL_NAME(snd_pcm_hw_params_get_channels) },
{ "snd_pcm_hw_params_set_rate_near", (void**)&SDL_NAME(snd_pcm_hw_params_set_rate_near) },
{ "snd_pcm_hw_params_set_period_size_near", (void**)&SDL_NAME(snd_pcm_hw_params_set_period_size_near) },
{ "snd_pcm_hw_params_set_periods_near", (void**)&SDL_NAME(snd_pcm_hw_params_set_periods_near) },
{ "snd_pcm_hw_params", (void**)&SDL_NAME(snd_pcm_hw_params) },
{ "snd_pcm_nonblock", (void**)&SDL_NAME(snd_pcm_nonblock) },
{ "snd_pcm_open", (void**)(char*)&SDL_NAME(snd_pcm_open) },
{ "snd_pcm_close", (void**)(char*)&SDL_NAME(snd_pcm_close) },
{ "snd_pcm_writei", (void**)(char*)&SDL_NAME(snd_pcm_writei) },
{ "snd_pcm_resume", (void**)(char*)&SDL_NAME(snd_pcm_resume) },
{ "snd_pcm_prepare", (void**)(char*)&SDL_NAME(snd_pcm_prepare) },
{ "snd_pcm_drain", (void**)(char*)&SDL_NAME(snd_pcm_drain) },
{ "snd_strerror", (void**)(char*)&SDL_NAME(snd_strerror) },
{ "snd_pcm_hw_params_sizeof", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_sizeof) },
{ "snd_pcm_hw_params_any", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_any) },
{ "snd_pcm_hw_params_set_access", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_access) },
{ "snd_pcm_hw_params_set_format", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_format) },
{ "snd_pcm_hw_params_set_channels", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_channels) },
{ "snd_pcm_hw_params_get_channels", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_get_channels) },
{ "snd_pcm_hw_params_set_rate_near", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_rate_near) },
{ "snd_pcm_hw_params_set_period_size_near", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_period_size_near) },
{ "snd_pcm_hw_params_set_periods_near", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_periods_near) },
{ "snd_pcm_hw_params", (void**)(char*)&SDL_NAME(snd_pcm_hw_params) },
{ "snd_pcm_nonblock", (void**)(char*)&SDL_NAME(snd_pcm_nonblock) },
};

static void UnloadALSALibrary(void) {
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