| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s |
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| 2 | #include "syscall.h" |
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| 3 | #include "../test.h" |
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| 4 | #include <errno.h> |
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| 5 | #include <sys/types.h> |
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| 6 | #include <sys/wait.h> |
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| 7 | |
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| 8 | int pipefd[2]; |
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| 9 | unsigned long long buf[2]; |
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| 10 | |
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| 11 | static void *thr(void *p) { |
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| 12 | barrier_wait(barrier: &barrier); |
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| 13 | mywrite(fd: pipefd[1], buf, count: sizeof(buf)); |
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| 14 | return 0; |
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| 15 | } |
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| 16 | |
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| 17 | int main() { |
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| 18 | barrier_init(barrier: &barrier, count: 2); |
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| 19 | if (mypipe(pipefd)) |
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| 20 | exit(status: (perror(s: "pipe" ), 1)); |
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| 21 | mywrite(fd: pipefd[1], buf, count: sizeof(buf)); |
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| 22 | pthread_t th; |
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| 23 | pthread_create(newthread: &th, attr: 0, start_routine: thr, arg: 0); |
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| 24 | myread(fd: pipefd[0], buf, count: sizeof(buf)); |
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| 25 | barrier_wait(barrier: &barrier); |
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| 26 | pthread_join(th: th, thread_return: 0); |
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| 27 | fprintf(stderr, format: "DONE\n" ); |
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| 28 | } |
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| 29 | |
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| 30 | // CHECK: WARNING: ThreadSanitizer: data race |
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| 31 | // CHECK: Read of size 8 |
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| 32 | // CHECK: #0 mywrite |
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| 33 | // CHECK: #1 thr |
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| 34 | // CHECK: Previous write of size 8 |
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| 35 | // CHECK: #0 myread |
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| 36 | // CHECK: #1 main |
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| 37 | // CHECK: DONE |
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| 38 | |
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