diff options
Diffstat (limited to 'clang/test/Analysis/OSAtomic_mac.cpp')
| -rw-r--r-- | clang/test/Analysis/OSAtomic_mac.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/clang/test/Analysis/OSAtomic_mac.cpp b/clang/test/Analysis/OSAtomic_mac.cpp new file mode 100644 index 0000000..8ad7b3c --- /dev/null +++ b/clang/test/Analysis/OSAtomic_mac.cpp @@ -0,0 +1,19 @@ +// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -analyze -analyzer-checker=core,osx -analyzer-store=region -verify -fblocks -analyzer-opt-analyze-nested-blocks %s + +// Test handling of OSAtomicCompareAndSwap when C++ inserts "no-op" casts and we +// do a forced load and binding to the environment on an expression that would regularly +// not have an environment binding. This previously triggered a crash (<rdar://problem/9339920>). +// NOTE: It is critical that the function called is OSAtomicCompareAndSwapIntBarrier. +bool OSAtomicCompareAndSwapIntBarrier( int __oldValue, int __newValue, volatile int *__theValue ) ; +static int _rdar9339920_x = 0; +int rdar9339920_aux(); + +int rdar9339920_test() { + int rdar9339920_x = rdar9339920_aux(); + if (rdar9339920_x != _rdar9339920_x) { + if (OSAtomicCompareAndSwapIntBarrier(_rdar9339920_x, rdar9339920_x, &_rdar9339920_x)) + return 1; + } + return 0; +} + |