llvm-project

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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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void *Thread(void *arg) {
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  char buf;
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  read((long)arg, &buf, 1);
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  barrier_wait(&barrier);
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  return NULL;
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}
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int main() {
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  barrier_init(&barrier, 2);
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  int fd = open("/dev/random", O_RDONLY);
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  pthread_t t;
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  pthread_create(&t, NULL, Thread, (void *)(long)fd);
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  barrier_wait(&barrier);
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  close(fd);
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  pthread_join(t, NULL);
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  fprintf(stderr, "DONE\n");
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: DONE
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