| 1 | // RUN: rm -rf %t-dir |
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| 2 | // RUN: mkdir %t-dir |
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| 3 | |
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| 4 | // RUN: %clangxx_tsan -O1 %s -o %t-dir/global_race.cpp.exe && %deflake %run %t-dir/global_race.cpp.exe 2>&1 \ |
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| 5 | // RUN: | FileCheck %s |
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| 6 | |
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| 7 | // Also check that memory access instrumentation can be configured by either |
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| 8 | // driver or legacy flags: |
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| 9 | |
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| 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 \ |
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| 11 | // RUN: | FileCheck --allow-empty --check-prefix=CHECK-MEMORY-ACCESS-OFF %s |
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| 12 | // 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 \ |
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| 13 | // RUN: | FileCheck --allow-empty --check-prefix=CHECK-MEMORY-ACCESS-OFF %s |
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| 14 | |
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| 15 | #include "test.h" |
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| 16 | |
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| 17 | int GlobalData[10]; |
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| 18 | |
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| 19 | void *Thread(void *a) { |
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| 20 | barrier_wait(barrier: &barrier); |
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| 21 | GlobalData[2] = 42; |
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| 22 | return 0; |
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| 23 | } |
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| 24 | |
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| 25 | int main() { |
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| 26 | barrier_init(barrier: &barrier, count: 2); |
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| 27 | print_address("addr=" , 1, GlobalData); |
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| 28 | pthread_t t; |
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| 29 | pthread_create(newthread: &t, attr: 0, start_routine: Thread, arg: 0); |
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| 30 | GlobalData[2] = 43; |
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| 31 | barrier_wait(barrier: &barrier); |
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| 32 | pthread_join(th: t, thread_return: 0); |
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| 33 | } |
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| 34 | |
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| 35 | // CHECK: addr=[[ADDR:0x[0-9,a-f]+]] |
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| 36 | // CHECK: WARNING: ThreadSanitizer: data race |
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| 37 | // CHECK: Location is global 'GlobalData' {{(of size 40 )?}}at [[ADDR]] (global_race.cpp.exe+0x{{[0-9,a-f]+}}) |
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| 38 | |
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| 39 | // CHECK-MEMORY-ACCESS-OFF-NOT: WARNING: ThreadSanitizer: data race |
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| 40 | |
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