a1526cd62b
Summary: These tests pass with clang, but fail if gcc was used. gcc build creates similar but not the same stacks. Reviewers: vitalybuka Reviewed By: vitalybuka Subscribers: dvyukov, llvm-commits, #sanitizers Tags: #sanitizers Differential Revision: https://reviews.llvm.org/D78114
42 lines
1.0 KiB
C++
42 lines
1.0 KiB
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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#include <string.h>
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char *data = new char[10];
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char *data1 = new char[10];
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char *data2 = new char[10];
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void *Thread1(void *x) {
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static volatile int size = 1;
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memcpy(data+5, data1, size);
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barrier_wait(&barrier);
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return NULL;
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}
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void *Thread2(void *x) {
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static volatile int size = 4;
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barrier_wait(&barrier);
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memcpy(data+3, data2, size);
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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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print_address("addr=", 1, &data[5]);
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pthread_t t[2];
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pthread_create(&t[0], NULL, Thread1, NULL);
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pthread_create(&t[1], NULL, Thread2, NULL);
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pthread_join(t[0], NULL);
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pthread_join(t[1], NULL);
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return 0;
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}
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// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Write of size 1 at [[ADDR]] by thread T2:
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// CHECK: #0 {{(memcpy|memmove)}}
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// CHECK: #{{[12]}} Thread2
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// CHECK: Previous write of size 1 at [[ADDR]] by thread T1:
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// CHECK: #0 {{(memcpy|memmove)}}
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// CHECK: #{{[12]}} Thread1
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