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| // Check that calling dispatch_once from a report callback works.
// RUN: %clang_tsan %s -o %t
// RUN: not %env_tsan_opts=ignore_noninstrumented_modules=0 %run %t 2>&1 | FileCheck %s
#include <dispatch/dispatch.h>
#include <pthread.h>
#include <stdio.h>
long g = 0;
long h = 0;
void f() {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
g++;
});
h++;
}
void __tsan_on_report() {
fprintf(stderr, "Report.\n");
f();
}
int main() {
fprintf(stderr, "Hello world.\n");
f();
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_unlock(&mutex); // Unlock of an unlocked mutex
fprintf(stderr, "g = %ld.\n", g);
fprintf(stderr, "h = %ld.\n", h);
fprintf(stderr, "Done.\n");
}
// CHECK: Hello world.
// CHECK: Report.
// CHECK: g = 1
// CHECK: h = 2
// CHECK: Done.
|