e4c1dd2c08
TSan recently got the "ignore_noninstrumented_modules" flag, which disables tracking of read and writes that come from noninstrumented modules (via interceptors). This is a way of suppressing false positives coming from system libraries and other noninstrumented code. This patch turns this on by default on Darwin, where it's supposed to replace the previous solution, "ignore_interceptors_accesses", which disables tracking in *all* interceptors. The new approach should re-enable TSan's ability to find races via interceptors on Darwin. Differential Revision: https://reviews.llvm.org/D29041 llvm-svn: 292981
51 lines
956 B
Plaintext
51 lines
956 B
Plaintext
// RUN: %clangxx_tsan %s -o %t -framework Foundation
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// RUN: %run %t 2>&1 | FileCheck %s
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#import <Foundation/Foundation.h>
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#import <memory>
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#import "../test.h"
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long my_global;
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struct MyStruct {
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void setGlobal() {
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my_global = 42;
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}
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~MyStruct() {
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my_global = 43;
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}
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};
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int main(int argc, const char *argv[]) {
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fprintf(stderr, "Hello world.\n");
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print_address("addr=", 1, &my_global);
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barrier_init(&barrier, 2);
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std::shared_ptr<MyStruct> shared(new MyStruct());
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dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
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std::weak_ptr<MyStruct> weak(shared);
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dispatch_async(q, ^{
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{
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std::shared_ptr<MyStruct> strong = weak.lock();
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if (!strong) exit(1);
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strong->setGlobal();
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}
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barrier_wait(&barrier);
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});
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barrier_wait(&barrier);
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shared.reset();
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fprintf(stderr, "Done.\n");
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}
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// CHECK: Hello world.
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// CHECK: Done.
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// CHECK-NOT: WARNING: ThreadSanitizer
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