Have __func__ and siblings point to block's implementation function
name. Fixes radar 7860965.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107044 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBlocks.cpp b/lib/CodeGen/CGBlocks.cpp
index d5fc993..5743aa0 100644
--- a/lib/CodeGen/CGBlocks.cpp
+++ b/lib/CodeGen/CGBlocks.cpp
@@ -840,11 +840,22 @@
 
   CGM.SetInternalFunctionAttributes(BD, Fn, FI);
 
+  QualType FnType(BlockFunctionType, 0);
+  bool HasPrototype = (dyn_cast<FunctionProtoType>(BlockFunctionType) != 0);
+  
+  IdentifierInfo *ID = &getContext().Idents.get(Name.getString());
+  CurCodeDecl = FunctionDecl::Create(getContext(),
+                                     getContext().getTranslationUnitDecl(),
+                                     SourceLocation(), ID, FnType, 
+                                     0,
+                                     FunctionDecl::Static,
+                                     FunctionDecl::None,
+                                     false, HasPrototype);
+  
   StartFunction(BD, ResultType, Fn, Args,
                 BExpr->getBody()->getLocEnd());
 
   CurFuncDecl = OuterFuncDecl;
-  CurCodeDecl = BD;
 
   // If we have a C++ 'this' reference, go ahead and force it into
   // existence now.