1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -triple x86_64-apple-darwin9 -analyze -analyzer-checker=core,osx -analyzer-store=region -verify -fblocks -analyzer-opt-analyze-nested-blocks %s 2*f4a2713aSLionel Sambuc // expected-no-diagnostics 3*f4a2713aSLionel Sambuc 4*f4a2713aSLionel Sambuc // Test handling of OSAtomicCompareAndSwap when C++ inserts "no-op" casts and we 5*f4a2713aSLionel Sambuc // do a forced load and binding to the environment on an expression that would regularly 6*f4a2713aSLionel Sambuc // not have an environment binding. This previously triggered a crash (<rdar://problem/9339920>). 7*f4a2713aSLionel Sambuc // NOTE: It is critical that the function called is OSAtomicCompareAndSwapIntBarrier. 8*f4a2713aSLionel Sambuc bool OSAtomicCompareAndSwapIntBarrier( int __oldValue, int __newValue, volatile int *__theValue ) ; 9*f4a2713aSLionel Sambuc static int _rdar9339920_x = 0; 10*f4a2713aSLionel Sambuc int rdar9339920_aux(); 11*f4a2713aSLionel Sambuc rdar9339920_test()12*f4a2713aSLionel Sambucint rdar9339920_test() { 13*f4a2713aSLionel Sambuc int rdar9339920_x = rdar9339920_aux(); 14*f4a2713aSLionel Sambuc if (rdar9339920_x != _rdar9339920_x) { 15*f4a2713aSLionel Sambuc if (OSAtomicCompareAndSwapIntBarrier(_rdar9339920_x, rdar9339920_x, &_rdar9339920_x)) 16*f4a2713aSLionel Sambuc return 1; 17*f4a2713aSLionel Sambuc } 18*f4a2713aSLionel Sambuc return 0; 19*f4a2713aSLionel Sambuc } 20*f4a2713aSLionel Sambuc 21