re PR c++/58561 ([c++11] ICE using declaration of function with auto in return type)

        PR c++/58561
        * dbxout.c: Include stringpool.h
        (dbxout_type) [default]: Ignore auto type.

From-SVN: r218020

gcc/ChangeLog

+2014-11-24  David Edelsohn  <dje.gcc@gmail.com>
+
+	PR c++/58561
+	* dbxout.c: Include stringpool.h
+	(dbxout_type) [default]: Ignore auto type.
+
 2014-11-24  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/63679

gcc/dbxout.c

@@ -103,6 +103,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "plugin-api.h"
 #include "ipa-ref.h"
 #include "cgraph.h"
+#include "stringpool.h"
 
 #ifdef XCOFF_DEBUGGING_INFO
 #include "xcoffout.h"
@@ -2329,6 +2330,17 @@ dbxout_type (tree type, int full)
       break;
 
     default:
+      /* A C++ function with deduced return type can have a TEMPLATE_TYPE_PARM
+	 named 'auto' in its type.
+	 No debug info for TEMPLATE_TYPE_PARM type supported yet.  */
+      if (lang_GNU_CXX ())
+	{
+	  tree name = TYPE_IDENTIFIER (type);
+	  if (name == get_identifier ("auto")
+	      || name == get_identifier ("decltype(auto)"))
+	    break;
+	}
+
       gcc_unreachable ();
     }
 }