Fix PointerExprEvaluator::VisitCastExpr so it doesn't misfold C++ casts which
it doesn't know how to fold, like derived-to-base casts.
llvm-svn: 92173
diff --git a/clang/test/CodeGenCXX/const-base-cast.cpp b/clang/test/CodeGenCXX/const-base-cast.cpp
new file mode 100644
index 0000000..a71384d
--- /dev/null
+++ b/clang/test/CodeGenCXX/const-base-cast.cpp
@@ -0,0 +1,11 @@
+// RUN: clang -cc1 -O1 -emit-llvm %s -o - | FileCheck %s
+
+// Check that the following construct, which is similar to one which occurs
+// in Firefox, is not misfolded (folding it correctly would be a bonus, but
+// that doesn't work at the moment, hence the -O1 in the runline).
+struct A { char x; };
+struct B { char y; };
+struct C : A,B {};
+unsigned char x = ((char*)(B*)(C*)0x1000) - (char*)0x1000;
+
+// CHECK: @x = global i8 1