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| // RUN: %clang_tsan %s -o %t -mmacosx-version-min=10.12
// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'
// UNSUPPORTED: ios
#include <os/lock.h>
#include <pthread.h>
#include <stdio.h>
long global_variable;
os_unfair_lock lock = OS_UNFAIR_LOCK_INIT;
void *Thread(void *a) {
os_unfair_lock_lock(&lock);
global_variable++;
os_unfair_lock_unlock(&lock);
return NULL;
}
int main() {
pthread_t t1, t2;
global_variable = 0;
pthread_create(&t1, NULL, Thread, NULL);
pthread_create(&t2, NULL, Thread, NULL);
pthread_join(t1, NULL);
pthread_join(t2, NULL);
fprintf(stderr, "global_variable = %ld\n", global_variable);
}
// CHECK: global_variable = 2
|