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Fixed compiler warning

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```
 ./src/thread/pthread/SDL_syssem.c:140:12: warning: variable 'retval' is used uninitialized whenever 'while' loop exits because its condition is false [-Wsometimes-uninitialized]
    while (sem_trywait(&sem->sem) != 0) {
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~
./src/thread/pthread/SDL_syssem.c:149:12: note: uninitialized use occurs here
    return retval;
           ^~~~~~
./src/thread/pthread/SDL_syssem.c:140:12: note: remove the condition if it is always true
    while (sem_trywait(&sem->sem) != 0) {
```

This was a legitimate bug, thank you clang!

Fixes https://github.com/libsdl-org/SDL/issues/6830

(cherry picked from commit b678a9802435152324e0603055e4bb190d0ae526)
This commit is contained in:
Sam Lantinga 2022-12-17 06:58:02 -08:00
parent 3b0cd44158
commit 187708e542
1 changed files with 1 additions and 1 deletions
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2
src/thread/pthread/SDL_syssem.c
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@ -100,7 +100,7 @@ int SDL_SemWait(SDL_sem *sem)
int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout)
{
int retval;
int retval = 0;
#ifdef HAVE_SEM_TIMEDWAIT
#ifndef HAVE_CLOCK_GETTIME
struct timeval now;