40 lines · cpp
1// RUN: rm -rf %t-dir2// RUN: mkdir %t-dir3 4// RUN: %clangxx_tsan -O1 %s -o %t-dir/global_race.cpp.exe && %deflake %run %t-dir/global_race.cpp.exe 2>&1 \5// RUN: | FileCheck %s6 7// Also check that memory access instrumentation can be configured by either8// driver or legacy flags:9 10// RUN: %clangxx_tsan -O1 %s -o %t-dir/global_race.cpp.exe -fno-sanitize-thread-memory-access && not %deflake %run %t-dir/global_race.cpp.exe 2>&1 \11// RUN: | FileCheck --allow-empty --check-prefix=CHECK-MEMORY-ACCESS-OFF %s12// RUN: %clangxx_tsan -O1 %s -o %t-dir/global_race.cpp.exe -mllvm -tsan-instrument-memory-accesses=0 && not %deflake %run %t-dir/global_race.cpp.exe 2>&1 \13// RUN: | FileCheck --allow-empty --check-prefix=CHECK-MEMORY-ACCESS-OFF %s14 15#include "test.h"16 17int GlobalData[10];18 19void *Thread(void *a) {20 barrier_wait(&barrier);21 GlobalData[2] = 42;22 return 0;23}24 25int main() {26 barrier_init(&barrier, 2);27 print_address("addr=", 1, GlobalData);28 pthread_t t;29 pthread_create(&t, 0, Thread, 0);30 GlobalData[2] = 43;31 barrier_wait(&barrier);32 pthread_join(t, 0);33}34 35// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]36// CHECK: WARNING: ThreadSanitizer: data race37// CHECK: Location is global 'GlobalData' {{(of size 40 )?}}at [[ADDR]] (global_race.cpp.exe+0x{{[0-9,a-f]+}})38 39// CHECK-MEMORY-ACCESS-OFF-NOT: WARNING: ThreadSanitizer: data race40