forked from OSchip/llvm-project
35 lines
686 B
C++
35 lines
686 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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#include <pthread.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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int fds[2];
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void *Thread1(void *x) {
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char buf;
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read(fds[0], &buf, 1);
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close(fds[0]);
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return 0;
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}
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void *Thread2(void *x) {
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close(fds[1]);
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return 0;
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}
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int main() {
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fds[0] = open("/dev/random", O_RDONLY);
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fds[1] = dup2(fds[0], 100);
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pthread_t t[2];
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pthread_create(&t[0], NULL, Thread1, NULL);
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pthread_create(&t[1], NULL, Thread2, NULL);
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pthread_join(t[0], NULL);
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pthread_join(t[1], NULL);
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fprintf(stderr, "OK\n");
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}
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// CHECK-NOT: WARNING: ThreadSanitizer: data race
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