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| // RUN: %clangxx_tsan %s -o %t -framework Foundation -fobjc-arc %darwin_min_target_with_full_runtime_arc_support
// RUN: %run %t 6 2>&1 | FileCheck %s --check-prefix=SIX
// RUN: not %run %t 7 2>&1 | FileCheck %s --check-prefix=SEVEN
#import <Foundation/Foundation.h>
static bool isTaggedPtr(id obj) {
uintptr_t ptr = (uintptr_t) obj;
return (ptr & 0x8000000000000001ull) != 0;
}
int main(int argc, char* argv[]) {
assert(argc == 2);
int arg = atoi(argv[1]);
@autoreleasepool {
NSObject* obj = [NSObject new];
NSObject* num1 = @7;
NSObject* num2 = [NSNumber numberWithInt:arg];
assert(!isTaggedPtr(obj));
assert(isTaggedPtr(num1) && isTaggedPtr(num2));
// obj -> num1 (includes num2)
@synchronized(obj) {
@synchronized(num1) {
}
}
// num2 -> obj1
@synchronized(num2) {
@synchronized(obj) {
// SEVEN: ThreadSanitizer: lock-order-inversion (potential deadlock)
}
}
}
NSLog(@"PASS");
// SIX-NOT: ThreadSanitizer
// SIX: PASS
return 0;
}
|