1 | // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
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2 | // Regtest for https://github.com/google/sanitizers/issues/447 |
3 | // This is a correct program and tsan should not report a race. |
4 | #include "test.h" |
5 | |
6 | int g; |
7 | __attribute__((noinline)) |
8 | int foo(int cond) { |
9 | if (cond) |
10 | return g; |
11 | return 0; |
12 | } |
13 | |
14 | void *Thread1(void *p) { |
15 | barrier_wait(barrier: &barrier); |
16 | long res = foo(cond: (long)p); |
17 | return (void*) res; |
18 | } |
19 | |
20 | int main() { |
21 | barrier_init(barrier: &barrier, count: 2); |
22 | pthread_t t; |
23 | pthread_create(newthread: &t, attr: 0, start_routine: Thread1, arg: 0); |
24 | g = 1; |
25 | barrier_wait(barrier: &barrier); |
26 | pthread_join(th: t, thread_return: 0); |
27 | fprintf(stderr, format: "PASS\n"); |
28 | // CHECK-NOT: ThreadSanitizer: data race |
29 | // CHECK: PASS |
30 | } |
31 |