diff options
Diffstat (limited to 'lib/tsan/output_tests/mop_with_offset.cc')
-rw-r--r-- | lib/tsan/output_tests/mop_with_offset.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/tsan/output_tests/mop_with_offset.cc b/lib/tsan/output_tests/mop_with_offset.cc new file mode 100644 index 0000000..fc497bf --- /dev/null +++ b/lib/tsan/output_tests/mop_with_offset.cc @@ -0,0 +1,36 @@ +#include <pthread.h> +#include <stddef.h> +#include <stdio.h> +#include <unistd.h> + +void *Thread1(void *x) { + int *p = (int*)x; + p[0] = 1; + return NULL; +} + +void *Thread2(void *x) { + usleep(500*1000); + char *p = (char*)x; + p[2] = 1; + return NULL; +} + +int main() { + int *data = new int(42); + fprintf(stderr, "ptr1=%p\n", data); + fprintf(stderr, "ptr2=%p\n", (char*)data + 2); + pthread_t t[2]; + pthread_create(&t[0], NULL, Thread1, data); + pthread_create(&t[1], NULL, Thread2, data); + pthread_join(t[0], NULL); + pthread_join(t[1], NULL); + delete data; +} + +// CHECK: ptr1=[[PTR1:0x[0-9,a-f]+]] +// CHECK: ptr2=[[PTR2:0x[0-9,a-f]+]] +// CHECK: WARNING: ThreadSanitizer: data race +// CHECK: Write of size 1 at [[PTR2]] by thread 2: +// CHECK: Previous write of size 4 at [[PTR1]] by thread 1: + |