From cf74da76db9ba69aac1033e23f775bc8974c48e3 Mon Sep 17 00:00:00 2001
From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Wed, 16 Nov 2011 07:18:12 +0000
Subject: Fix PR11385: A pointer constant expression which has been cast via an
 integer is not safely derived. Don't allow lvalue-to-rvalue conversions on
 the result of dereferencing such a pointer.

llvm-svn: 144783
---
 clang/lib/AST/ExprConstant.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'clang/lib/AST/ExprConstant.cpp')

diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index 1451fd11195..699d81715e3 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -3197,6 +3197,7 @@ bool IntExprEvaluator::VisitCastExpr(const CastExpr *E) {
       if (Info.Ctx.getTypeSize(DestType) != Info.Ctx.getTypeSize(SrcType))
         return false;
 
+      LV.Designator.setInvalid();
       LV.moveInto(Result);
       return true;
     }
-- 
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