| 1 | // RUN: %clangxx_msan -O0 %s -o %t && %run %t |
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| 2 | |
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| 3 | // Check that when TLS block is reused between threads, its shadow is cleaned. |
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| 4 | |
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| 5 | #include <pthread.h> |
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| 6 | #include <stdio.h> |
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| 7 | |
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| 8 | int __thread x; |
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| 9 | |
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| 10 | void *ThreadFn(void *) { |
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| 11 | if (!x) |
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| 12 | printf(format: "zzz\n" ); |
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| 13 | int y; |
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| 14 | int * volatile p = &y; |
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| 15 | x = *p; |
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| 16 | return 0; |
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| 17 | } |
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| 18 | |
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| 19 | int main(void) { |
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| 20 | pthread_t t; |
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| 21 | for (int i = 0; i < 100; ++i) { |
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| 22 | pthread_create(newthread: &t, attr: 0, start_routine: ThreadFn, arg: 0); |
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| 23 | pthread_join(th: t, thread_return: 0); |
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| 24 | } |
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| 25 | return 0; |
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| 26 | } |
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| 27 | |
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