bba1d40589
When dealing with GCD worker threads, TSan currently prints weird things like "created by thread T-1" and "[failed to restore the stack]" in reports. This patch avoids that and instead prints "Thread T3 (...) is a GCD worker thread". Differential Revision: https://reviews.llvm.org/D29103 llvm-svn: 293882
44 lines
1.0 KiB
Plaintext
44 lines
1.0 KiB
Plaintext
// RUN: %clang_tsan %s -o %t -framework Foundation
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// RUN: %deflake %run %t 2>&1 | FileCheck %s
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#import <Foundation/Foundation.h>
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#import "../test.h"
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long global;
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int main() {
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fprintf(stderr, "Hello world.\n");
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print_address("addr=", 1, &global);
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barrier_init(&barrier, 2);
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global = 42;
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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global = 43;
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barrier_wait(&barrier);
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});
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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barrier_wait(&barrier);
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global = 44;
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dispatch_sync(dispatch_get_main_queue(), ^{
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CFRunLoopStop(CFRunLoopGetCurrent());
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});
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});
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CFRunLoopRun();
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fprintf(stderr, "Done.\n");
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}
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// CHECK: Hello world.
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Write of size 8
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// CHECK: Previous write of size 8
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// CHECK: Location is global
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// CHECK: Thread {{.*}} is a GCD worker thread
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// CHECK-NOT: failed to restore the stack
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// CHECK: Thread {{.*}} is a GCD worker thread
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// CHECK-NOT: failed to restore the stack
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// CHECK: Done.
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