[cfe-commits] r141604 - in /cfe/trunk: lib/AST/ExprConstant.cpp test/SemaCXX/i-c-e-cxx.cpp

[Eli Friedman]

Author: efriedma
Date: Mon Oct 10 19:13:24 2011
New Revision: 141604

URL: http://llvm.org/viewvc/llvm-project?rev=141604&view=rev
Log:
Extend lvalue evaluation in ExprConstant.cpp to handle CK_LValueBitCast (which is completely trivial).  PR8836.


Modified:
    cfe/trunk/lib/AST/ExprConstant.cpp
    cfe/trunk/test/SemaCXX/i-c-e-cxx.cpp

Modified: cfe/trunk/lib/AST/ExprConstant.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ExprConstant.cpp?rev=141604&r1=141603&r2=141604&view=diff
==============================================================================
--- cfe/trunk/lib/AST/ExprConstant.cpp (original)
+++ cfe/trunk/lib/AST/ExprConstant.cpp Mon Oct 10 19:13:24 2011
@@ -481,7 +481,10 @@
       return false;
 
     case CK_NoOp:
+    case CK_LValueBitCast:
       return Visit(E->getSubExpr());
+
+    // FIXME: Support CK_DerivedToBase and friends.
     }
   }
 

Modified: cfe/trunk/test/SemaCXX/i-c-e-cxx.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/i-c-e-cxx.cpp?rev=141604&r1=141603&r2=141604&view=diff
==============================================================================
--- cfe/trunk/test/SemaCXX/i-c-e-cxx.cpp (original)
+++ cfe/trunk/test/SemaCXX/i-c-e-cxx.cpp Mon Oct 10 19:13:24 2011
@@ -57,3 +57,7 @@
 // PR11040
 const int x = 10;
 int* y = reinterpret_cast<const char&>(x); // expected-error {{cannot initialize}}
+
+// This isn't an integral constant expression, but make sure it folds anyway.
+struct PR8836 { char _; long long a; };
+int PR8836test[(__typeof(sizeof(int)))&reinterpret_cast<const volatile char&>((((PR8836*)0)->a))];