Change the representation of builtin functions in the AST

(__builtin_* etc.) so that it isn't possible to take their address.
Specifically, introduce a new type to represent a reference to a builtin
function, and a new cast kind to convert it to a function pointer in the
operand of a call.  Fixes PR13195.

llvm-svn: 162962

1 files changed, 1 insertions, 0 deletions

diff --git a/clang/lib/Edit/RewriteObjCFoundationAPI.cpp b/clang/lib/Edit/RewriteObjCFoundationAPI.cpp
index d15b7a75e8f..de96fee4161 100644
--- a/clang/lib/Edit/RewriteObjCFoundationAPI.cpp
+++ b/clang/lib/Edit/RewriteObjCFoundationAPI.cpp
@@ -920,6 +920,7 @@ static bool rewriteToNumericBoxedExpression(const ObjCMessageExpr *Msg,
     case CK_ARCExtendBlockObject:
     case CK_NonAtomicToAtomic:
     case CK_CopyAndAutoreleaseBlockObject:
+    case CK_BuiltinFnToFnPtr:
       return false;
     }
   }