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
28 lines
644 B
C++
28 lines
644 B
C++
// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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static void handler(int, siginfo_t*, void*) {
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const char *str = "HELLO FROM SIGNAL\n";
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write(2, str, strlen(str));
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}
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int main() {
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struct sigaction act = {};
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act.sa_sigaction = &handler;
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sigaction(SIGPROF, &act, 0);
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kill(getpid(), SIGPROF);
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sleep(1); // let the signal handler run, can't use barrier in sig handler
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fprintf(stderr, "DONE\n");
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return 0;
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}
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// CHECK-NOT: WARNING: ThreadSanitizer
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// CHECK: HELLO FROM SIGNAL
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// CHECK: DONE
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