| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
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| 2 | #include "test.h" |
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| 3 | #include <string.h> |
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| 4 | |
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| 5 | char *data = new char[10]; |
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| 6 | char *data1 = new char[10]; |
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| 7 | char *data2 = new char[10]; |
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| 8 | |
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| 9 | void *Thread1(void *x) { |
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| 10 | static volatile int size = 1; |
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| 11 | memcpy(dest: data+5, src: data1, n: size); |
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| 12 | barrier_wait(barrier: &barrier); |
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| 13 | return NULL; |
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| 14 | } |
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| 15 | |
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| 16 | void *Thread2(void *x) { |
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| 17 | static volatile int size = 4; |
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| 18 | barrier_wait(barrier: &barrier); |
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| 19 | memcpy(dest: data+3, src: data2, n: size); |
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| 20 | return NULL; |
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| 21 | } |
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| 22 | |
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| 23 | int main() { |
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| 24 | barrier_init(barrier: &barrier, count: 2); |
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| 25 | print_address("addr1=" , 1, &data[3]); |
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| 26 | print_address("addr2=" , 1, &data[5]); |
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| 27 | pthread_t t[2]; |
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| 28 | pthread_create(newthread: &t[0], NULL, start_routine: Thread1, NULL); |
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| 29 | pthread_create(newthread: &t[1], NULL, start_routine: Thread2, NULL); |
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| 30 | pthread_join(th: t[0], NULL); |
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| 31 | pthread_join(th: t[1], NULL); |
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| 32 | return 0; |
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| 33 | } |
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| 34 | |
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| 35 | // CHECK: addr1=[[ADDR1:0x[0-9,a-f]+]] |
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| 36 | // CHECK: addr2=[[ADDR2:0x[0-9,a-f]+]] |
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| 37 | // CHECK: WARNING: ThreadSanitizer: data race |
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| 38 | // CHECK: Write of size 4 at [[ADDR1]] by thread T2: |
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| 39 | // CHECK: #0 {{.*mem(cpy|move)}} |
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| 40 | // CHECK: #{{[12]}} Thread2 |
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| 41 | // CHECK: Previous write of size 1 at [[ADDR2]] by thread T1: |
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| 42 | // CHECK: #0 {{.*mem(cpy|move)}} |
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| 43 | // CHECK: #{{[12]}} Thread1 |
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| 44 | |
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