[patch c++]: Fix pr/58835 [4.7/4.8/4.9 Regression] ICE with __PRETTY_FUNCTION__ in broken function

[Kai Tietz]

Hi,

the following patch adds missing handling of error_mark_node result of
fname_decl within finish_fname.

ChangeLog

2014-02-11  Kai Tietz  <kti...@redhat.com>

        PR c++/58835
        * semantics.c (finish_fname): Handle error_mark_node.

Regression tested for x86_64-unknown-linux-gnu, i686-w64-mingw32.  Ok for apply?

Regards,
Kai

Index: semantics.c
===================================================================
--- semantics.c (Revision 207686)
+++ semantics.c (Arbeitskopie)
@@ -2630,7 +2630,8 @@ finish_fname (tree id)
   tree decl;

   decl = fname_decl (input_location, C_RID_CODE (id), id);
-  if (processing_template_decl && current_function_decl)
+  if (processing_template_decl && current_function_decl
+      && decl != error_mark_node)
     decl = DECL_NAME (decl);
   return decl;
 }