forked from OSchip/llvm-project
38 lines
843 B
C++
38 lines
843 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
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#include "syscall.h"
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#include "../test.h"
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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int pipefd[2];
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char buf[10];
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static void *thr(void *p) {
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barrier_wait(&barrier);
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mywrite(pipefd[1], buf, sizeof(buf));
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return 0;
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}
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int main() {
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barrier_init(&barrier, 2);
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if (mypipe(pipefd))
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exit((perror("pipe"), 1));
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mywrite(pipefd[1], buf, sizeof(buf));
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pthread_t th;
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pthread_create(&th, 0, thr, 0);
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myread(pipefd[0], buf, sizeof(buf));
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barrier_wait(&barrier);
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pthread_join(th, 0);
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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: Read of size 8
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// CHECK: #0 mywrite
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// CHECK: #1 thr
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// CHECK: Previous write of size 8
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// CHECK: #0 myread
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// CHECK: #1 main
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// CHECK: DONE
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