51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
|
|
#include "test.h"
|
|
|
|
int Global;
|
|
volatile int x;
|
|
const int kSize = 64 << 10;
|
|
volatile long data[kSize];
|
|
|
|
void __attribute__((noinline)) foo() {
|
|
for (int i = 0; i < kSize; i++)
|
|
data[i]++;
|
|
}
|
|
|
|
void *Thread(void *a) {
|
|
__atomic_store_n(&x, 1, __ATOMIC_RELEASE);
|
|
foo();
|
|
data[0]++;
|
|
if (a != 0)
|
|
barrier_wait(&barrier);
|
|
return 0;
|
|
}
|
|
|
|
int main() {
|
|
barrier_init(&barrier, 2);
|
|
for (int i = 0; i < 50; i++) {
|
|
pthread_t t;
|
|
pthread_create(&t, 0, Thread, 0);
|
|
pthread_join(t, 0);
|
|
}
|
|
pthread_t t;
|
|
pthread_create(&t, 0, Thread, (void*)1);
|
|
barrier_wait(&barrier);
|
|
for (int i = 0; i < kSize; i++)
|
|
data[i]++;
|
|
pthread_join(t, 0);
|
|
fprintf(stderr, "DONE\n");
|
|
return 0;
|
|
}
|
|
|
|
// Previously this test produced bogus stack traces like:
|
|
// Previous write of size 8 at 0x0000006a8ff8 by thread T17:
|
|
// #0 foo() restore_stack.cpp:13:5 (restore_stack.cpp.exe+0x00000040622c)
|
|
// #1 Thread(void*) restore_stack.cpp:18:3 (restore_stack.cpp.exe+0x000000406283)
|
|
// #2 __tsan_thread_start_func rtl/tsan_interceptors.cpp:886 (restore_stack.cpp.exe+0x00000040a749)
|
|
// #3 Thread(void*) restore_stack.cpp:18:3 (restore_stack.cpp.exe+0x000000406283)
|
|
|
|
// CHECK: WARNING: ThreadSanitizer: data race
|
|
// CHECK-NOT: __tsan_thread_start_func
|
|
// CHECK-NOT: #3 Thread
|
|
// CHECK: DONE
|