From 136357ac8d1da764c452aa4316ebf8ea7e027457 Mon Sep 17 00:00:00 2001
From: Jason Merrill <jason@redhat.com>
Date: Sun, 17 Mar 2013 23:41:10 -0400
Subject: [PATCH] re PR c++/54359 ([C++0x] decltype in member function's
 trailing return type when defined outside of class)

	PR c++/54359
	PR c++/56639
	* parser.c (cp_parser_direct_declarator): Bail if we see a
	qualified-id not at namespace scope.

From-SVN: r196765
---
 gcc/cp/ChangeLog                       |  5 +++++
 gcc/cp/parser.c                        | 15 ++++++++++++---
 gcc/testsuite/g++.dg/parse/typename7.C |  2 +-
 gcc/testsuite/g++.dg/template/arrow2.C | 12 ++++++++++++
 4 files changed, 30 insertions(+), 4 deletions(-)
 create mode 100644 gcc/testsuite/g++.dg/template/arrow2.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index b341e929790..b2796b6ca13 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,10 @@
 2013-03-17  Jason Merrill  <jason@redhat.com>
 
+	PR c++/54359
+	PR c++/56639
+	* parser.c (cp_parser_direct_declarator): Bail if we see a
+	qualified-id not at namespace scope.
+
 	PR c++/17232
 	PR c++/56642
 	* typeck2.c (abstract_virtuals_error_sfinae): Revert complete_type
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 0222e90856f..23fe3f302a0 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -16707,9 +16707,18 @@ cp_parser_direct_declarator (cp_parser* parser,
 	handle_declarator:;
 	  scope = get_scope_of_declarator (declarator);
 	  if (scope)
-	    /* Any names that appear after the declarator-id for a
-	       member are looked up in the containing scope.  */
-	    pushed_scope = push_scope (scope);
+	    {
+	      /* Any names that appear after the declarator-id for a
+		 member are looked up in the containing scope.  */
+	      if (at_function_scope_p ())
+		{
+		  /* But declarations with qualified-ids can't appear in a
+		     function.  */
+		  cp_parser_error (parser, "qualified-id in declaration");
+		  break;
+		}
+	      pushed_scope = push_scope (scope);
+	    }
 	  parser->in_declarator_p = true;
 	  if ((ctor_dtor_or_conv_p && *ctor_dtor_or_conv_p)
 	      || (declarator && declarator->kind == cdk_id))
diff --git a/gcc/testsuite/g++.dg/parse/typename7.C b/gcc/testsuite/g++.dg/parse/typename7.C
index 2d823f8078e..6ec76961013 100644
--- a/gcc/testsuite/g++.dg/parse/typename7.C
+++ b/gcc/testsuite/g++.dg/parse/typename7.C
@@ -22,7 +22,7 @@ struct B
     A().bar<typename T>(t); } // { dg-error "expected|parse error|no matching" }
   // { dg-message "candidate" "candidate note" { target *-*-* } 22 }
   void bad(T t) {
-    B<typename T>::bar(t); } // { dg-error "invalid|not a template" }
+    B<typename T>::bar(t); } // { dg-error "invalid|qualified-id|not a template" }
 };
 
 void baz()
diff --git a/gcc/testsuite/g++.dg/template/arrow2.C b/gcc/testsuite/g++.dg/template/arrow2.C
new file mode 100644
index 00000000000..8ec9e01d0de
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/arrow2.C
@@ -0,0 +1,12 @@
+// PR c++/56639
+
+struct A {
+  int i;
+  static A* f();
+};
+
+struct B {
+  void g() {
+    int (A::f()->i);
+  }
+};
-- 
2.30.2