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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int X;
void *Thread1(void *x) {
sleep(1);
int f = open("/dev/random", O_RDONLY);
char buf;
read(f, &buf, 1);
close(f);
X = 42;
return NULL;
}
void *Thread2(void *x) {
X = 43;
write(STDOUT_FILENO, "a", 1);
return NULL;
}
int main() {
pthread_t t[2];
pthread_create(&t[0], NULL, Thread1, NULL);
pthread_create(&t[1], NULL, Thread2, NULL);
pthread_join(t[0], NULL);
pthread_join(t[1], NULL);
}
// CHECK: WARNING: ThreadSanitizer: data race
// CHECK: Write of size 4
// CHECK: #0 Thread1
// CHECK: Previous write of size 4
// CHECK: #0 Thread2
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