| 1 | // RUN: %clangxx_tsan %s -o %t |
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| 2 | // RUN: %deflake %run %t 2>&1 | FileCheck %s |
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| 3 | |
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| 4 | #include <thread> |
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| 5 | |
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| 6 | #import "../test.h" |
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| 7 | |
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| 8 | extern "C" { |
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| 9 | void __tsan_write8(void *addr); |
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| 10 | } |
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| 11 | |
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| 12 | static void *tag = (void *)0x1; |
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| 13 | |
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| 14 | __attribute__((no_sanitize("thread" ))) |
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| 15 | void ExternalWrite(void *addr) { |
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| 16 | __tsan_external_write(addr, caller_pc: nullptr, tag); |
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| 17 | } |
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| 18 | |
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| 19 | __attribute__((no_sanitize("thread" ))) |
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| 20 | void RegularWrite(void *addr) { |
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| 21 | __tsan_write8(addr); |
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| 22 | } |
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| 23 | |
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| 24 | int main(int argc, char *argv[]) { |
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| 25 | barrier_init(barrier: &barrier, count: 2); |
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| 26 | fprintf(stderr, format: "Start.\n" ); |
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| 27 | // CHECK: Start. |
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| 28 | |
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| 29 | { |
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| 30 | void *opaque_object = malloc(size: 16); |
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| 31 | std::thread t1([opaque_object] { |
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| 32 | ExternalWrite(opaque_object); |
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| 33 | barrier_wait(&barrier); |
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| 34 | }); |
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| 35 | std::thread t2([opaque_object] { |
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| 36 | barrier_wait(&barrier); |
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| 37 | ExternalWrite(opaque_object); |
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| 38 | }); |
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| 39 | // CHECK: WARNING: ThreadSanitizer: Swift access race |
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| 40 | // CHECK: Modifying access of Swift variable at {{.*}} by thread {{.*}} |
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| 41 | // CHECK: Previous modifying access of Swift variable at {{.*}} by thread {{.*}} |
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| 42 | // CHECK: SUMMARY: ThreadSanitizer: Swift access race |
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| 43 | t1.join(); |
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| 44 | t2.join(); |
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| 45 | } |
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| 46 | |
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| 47 | fprintf(stderr, format: "external+external test done.\n" ); |
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| 48 | // CHECK: external+external test done. |
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| 49 | |
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| 50 | { |
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| 51 | void *opaque_object = malloc(size: 16); |
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| 52 | std::thread t1([opaque_object] { |
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| 53 | ExternalWrite(opaque_object); |
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| 54 | barrier_wait(&barrier); |
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| 55 | }); |
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| 56 | std::thread t2([opaque_object] { |
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| 57 | barrier_wait(&barrier); |
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| 58 | RegularWrite(opaque_object); |
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| 59 | }); |
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| 60 | // CHECK: WARNING: ThreadSanitizer: Swift access race |
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| 61 | // CHECK: Write of size 8 at {{.*}} by thread {{.*}} |
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| 62 | // CHECK: Previous modifying access of Swift variable at {{.*}} by thread {{.*}} |
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| 63 | // CHECK: SUMMARY: ThreadSanitizer: Swift access race |
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| 64 | t1.join(); |
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| 65 | t2.join(); |
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| 66 | } |
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| 67 | |
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| 68 | fprintf(stderr, format: "external+regular test done.\n" ); |
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| 69 | // CHECK: external+regular test done. |
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| 70 | |
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| 71 | { |
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| 72 | void *opaque_object = malloc(size: 16); |
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| 73 | std::thread t1([opaque_object] { |
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| 74 | RegularWrite(opaque_object); |
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| 75 | barrier_wait(&barrier); |
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| 76 | }); |
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| 77 | std::thread t2([opaque_object] { |
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| 78 | barrier_wait(&barrier); |
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| 79 | ExternalWrite(opaque_object); |
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| 80 | }); |
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| 81 | // CHECK: WARNING: ThreadSanitizer: Swift access race |
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| 82 | // CHECK: Modifying access of Swift variable at {{.*}} by thread {{.*}} |
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| 83 | // CHECK: Previous write of size 8 at {{.*}} by thread {{.*}} |
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| 84 | // CHECK: SUMMARY: ThreadSanitizer: Swift access race |
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| 85 | t1.join(); |
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| 86 | t2.join(); |
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| 87 | } |
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| 88 | |
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| 89 | fprintf(stderr, format: "regular+external test done.\n" ); |
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| 90 | // CHECK: regular+external test done. |
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| 91 | } |
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| 92 | |
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| 93 | |
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