r175715 - [analyzer] Add another reinterpret_cast behavior test.

[Jordan Rose]

Author: jrose
Date: Wed Feb 20 21:12:26 2013
New Revision: 175715

URL: http://llvm.org/viewvc/llvm-project?rev=175715&view=rev
Log:
[analyzer] Add another reinterpret_cast behavior test.

The test is similar to <rdar://problem/13239840> but doesn't actually test
the case that fails there. It's still a good test, though.

Modified:
    cfe/trunk/test/Analysis/reinterpret-cast.cpp

Modified: cfe/trunk/test/Analysis/reinterpret-cast.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/reinterpret-cast.cpp?rev=175715&r1=175714&r2=175715&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/reinterpret-cast.cpp (original)
+++ cfe/trunk/test/Analysis/reinterpret-cast.cpp Wed Feb 20 21:12:26 2013
@@ -46,3 +46,21 @@ namespace PR14872 {
     f2(p);
   }
 }
+
+namespace rdar13249297 {
+  struct IntWrapperSubclass : public IntWrapper {};
+
+  struct IntWrapperWrapper {
+    IntWrapper w;
+  };
+
+  void test(IntWrapperWrapper *ww) {
+    reinterpret_cast<IntWrapperSubclass *>(ww)->x = 42;
+    clang_analyzer_eval(reinterpret_cast<IntWrapperSubclass *>(ww)->x == 42); // expected-warning{{TRUE}}
+
+    clang_analyzer_eval(ww->w.x == 42); // expected-warning{{TRUE}}
+    ww->w.x = 0;
+
+    clang_analyzer_eval(reinterpret_cast<IntWrapperSubclass *>(ww)->x == 42); // expected-warning{{FALSE}}
+  }
+}