Richard, thanks for the review!

================
Comment at: include/clang/AST/Expr.h:1184-1185
@@ +1183,4 @@
+
+  void setIdentType(IdentType IT) { Type = IT; }
+  void setFunctionNameRef(VarDecl *D) { FNRef = D; };
+
----------------
rsmith wrote:
> You can delete these and directly set the members from `ASTStmtReader`.
Ok

================
Comment at: lib/AST/Expr.cpp:468
@@ +467,3 @@
+  }
+}
+
----------------
rsmith wrote:
> You need an `llvm_unreachable` here to shut up GCC's `-Wreturn-type`.
Ok, I'll break in case for PrettyFunctionNoVirtual and llvm_unreachable at the 
end of the method.

================
Comment at: lib/Sema/SemaExpr.cpp:2969-2973
@@ +2968,7 @@
+    if (ND == nullptr || !DC->containsDecl(ND)) {
+      ND = VarDecl::Create(Context, DC, currentDecl->getLocation(),
+                           currentDecl->getLocation(), Id, ResTy,
+                           Context.getTrivialTypeSourceInfo(ResTy), SC_Static);
+      AddInitializerToDecl(ND, SL, /*DirectInit*/ true,
+                           /*TypeMayContainAuto*/ false);
+      if (S)
----------------
rsmith wrote:
> Please remove the static local variable for now; we're discussing this on the 
> standard reflectors and the requirement for this may soon be removed. The 
> above doesn't completely fix the ABI problem anyway (if two compilers did 
> this and came up with different strings, they could give `__func__` different 
> types). Sorry for the change in direction here.
Ok, I'll return back to StringLiteral then.

http://reviews.llvm.org/D5365



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