| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
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| 2 | #include "test.h" |
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| 3 | |
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| 4 | // Ensure that we can restore a stack of a finished thread. |
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| 5 | |
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| 6 | int g_data; |
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| 7 | |
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| 8 | void __attribute__((noinline)) foobar(int *p) { |
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| 9 | *p = 42; |
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| 10 | } |
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| 11 | |
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| 12 | void *Thread1(void *x) { |
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| 13 | foobar(p: &g_data); |
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| 14 | barrier_wait(barrier: &barrier); |
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| 15 | return NULL; |
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| 16 | } |
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| 17 | |
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| 18 | void *Thread2(void *x) { |
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| 19 | barrier_wait(barrier: &barrier); |
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| 20 | sleep(seconds: 1); // let the thread finish and exit |
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| 21 | g_data = 43; |
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| 22 | return NULL; |
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| 23 | } |
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| 24 | |
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| 25 | int main() { |
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| 26 | barrier_init(barrier: &barrier, count: 2); |
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| 27 | pthread_t t[2]; |
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| 28 | pthread_create(newthread: &t[0], NULL, start_routine: Thread1, NULL); |
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| 29 | pthread_create(newthread: &t[1], NULL, start_routine: Thread2, NULL); |
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| 30 | pthread_join(th: t[0], NULL); |
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| 31 | pthread_join(th: t[1], NULL); |
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| 32 | return 0; |
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| 33 | } |
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| 34 | |
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| 35 | // CHECK: WARNING: ThreadSanitizer: data race |
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| 36 | // CHECK: Write of size 4 at {{.*}} by thread T2: |
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| 37 | // CHECK: Previous write of size 4 at {{.*}} by thread T1: |
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| 38 | // CHECK: #0 foobar |
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| 39 | // CHECK: #1 Thread1 |
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| 40 | // CHECK: Thread T1 (tid={{.*}}, finished) created by main thread at: |
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| 41 | // CHECK: #0 pthread_create |
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| 42 | // CHECK: #1 main |
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| 43 | |
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