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