shithub: dav1d

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pthread_create: make sure attr isn't nil

--- a/src/plan9_thread.c

+++ b/src/plan9_thread.c

@@ -28,10 +28,13 @@

 int

 pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*func)(void*), void *arg)

 {

+	int stacksz = attr == nil ? 0 : attr->stack_size;

+	if(stacksz < 65536)

+		stacksz = 65536;

 	thread->waitchan = chancreate(sizeof(void*), 0);

 	thread->func = func;

 	thread->arg = arg;

-	thread->pid = proccreate(thre, thread, attr->stack_size);

+	thread->pid = proccreate(thre, thread, stacksz);

 	return 0;

 }