re PR c++/67767 (-Wsuggest-attribute=noreturn suggests noreturn for function…

re PR c++/67767 (-Wsuggest-attribute=noreturn suggests noreturn for function which already has noreturn and cold.)

	PR c++/67767
	* parser.c (cp_parser_std_attribute_spec_seq): Don't assume
	attr_spec is always single element chain, chain all the attributes
	properly together in the right order.

	* g++.dg/cpp0x/pr67767.C: New test.

From-SVN: r233560

gcc/cp/ChangeLog

+2016-02-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/67767
+	* parser.c (cp_parser_std_attribute_spec_seq): Don't assume
+	attr_spec is always single element chain, chain all the attributes
+	properly together in the right order.
+
 2016-02-18  Jason Merrill  <jason@redhat.com>
 
 	* mangle.c (maybe_check_abi_tags): Add for_decl parm.  Call

gcc/cp/parser.c

@@ -24104,7 +24104,8 @@ cp_parser_std_attribute_spec (cp_parser *parser)
 static tree
 cp_parser_std_attribute_spec_seq (cp_parser *parser)
 {
-  tree attr_specs = NULL;
+  tree attr_specs = NULL_TREE;
+  tree attr_last = NULL_TREE;
 
   while (true)
     {
@@ -24114,11 +24115,13 @@ cp_parser_std_attribute_spec_seq (cp_parser *parser)
       if (attr_spec == error_mark_node)
 	return error_mark_node;
 
-      TREE_CHAIN (attr_spec) = attr_specs;
-      attr_specs = attr_spec;
+      if (attr_last)
+	TREE_CHAIN (attr_last) = attr_spec;
+      else
+	attr_specs = attr_last = attr_spec;
+      attr_last = tree_last (attr_last);
     }
 
-  attr_specs = nreverse (attr_specs);
   return attr_specs;
 }
 

gcc/testsuite/ChangeLog

+2016-02-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/67767
+	* g++.dg/cpp0x/pr67767.C: New test.
+
 2016-02-19  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* lib/target-supports.exp: Define aarch64_asm_FUNC_ok checks

gcc/testsuite/g++.dg/cpp0x/pr67767.C

+// PR c++/67767
+// { dg-do compile { target c++11 } }
+// { dg-options "-Wsuggest-attribute=noreturn" }
+
+void foo [[gnu::cold, gnu::noreturn]] ();
+
+void foo ()	// { dg-bogus "function might be candidate for attribute" }
+{
+  throw 1;
+}