re PR c++/68722 (internal compiler error: in merge_exception_specifiers, at cp/typeck2.c:2108)

/cp
2016-04-12  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/68722
	* parser.c (cp_parser_cache_defarg): When file ends in default
	argument simply return error_mark_node.

/testsuite
2016-04-12  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/68722
	* g++.dg/parse/pr68722.C: New.

From-SVN: r234909

gcc/cp/ChangeLog

+2016-04-12  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/68722
+	* parser.c (cp_parser_cache_defarg): When file ends in default
+	argument simply return error_mark_node.
+
 2016-04-12  Nathan Sidwell  <nathan@acm.org>
 
 	PR c++/70501

gcc/cp/parser.c

@@ -27472,8 +27472,7 @@ cp_parser_cache_defarg (cp_parser *parser, bool nsdmi)
 	case CPP_EOF:
 	case CPP_PRAGMA_EOL:
 	  error_at (token->location, "file ends in default argument");
-	  done = true;
-	  break;
+	  return error_mark_node;
 
 	case CPP_NAME:
 	case CPP_SCOPE:

gcc/testsuite/ChangeLog

+2016-04-12  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/68722
+	* g++.dg/parse/pr68722.C: New.
+
 2016-04-12  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/70596

gcc/testsuite/g++.dg/parse/pr68722.C

+// PR c++/68722
+
+class A {
+  &__loc   // { dg-error "" }
+} class ios_base {  // { dg-error "" }
+  A _M_ios_locale ios_base(ios_base &) template <_Traits> class basic_ios {  // { dg-error "" }
+basic_ios basic_ios = operator=  // { dg-error "" }
+
+// { dg-prune-output "file ends in default argument" }