3ab6b2347e
Even sleep(1) lead to episodical flakes on some machines. Use an invisible by tsan barrier to enforce required execution order instead. This makes the tests deterministic and faster. llvm-svn: 226659
34 lines
788 B
C
34 lines
788 B
C
// RUN: %clang_tsan -O1 %s -lpthread -o %t && %deflake %run %t | FileCheck %s
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// Regression test for
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// https://code.google.com/p/thread-sanitizer/issues/detail?id=61
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// When the data race was reported, pthread_atfork() handler used to be
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// executed which caused another race report in the same thread, which resulted
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// in a deadlock.
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#include "test.h"
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int glob = 0;
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void *worker(void *unused) {
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barrier_wait(&barrier);
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glob++;
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return NULL;
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}
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void atfork() {
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fprintf(stderr, "ATFORK\n");
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glob++;
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}
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int main() {
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barrier_init(&barrier, 2);
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pthread_atfork(atfork, NULL, NULL);
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pthread_t t;
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pthread_create(&t, NULL, worker, NULL);
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glob++;
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barrier_wait(&barrier);
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pthread_join(t, NULL);
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// CHECK: ThreadSanitizer: data race
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// CHECK-NOT: ATFORK
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return 0;
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}
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