re PR c++/79967 (ICE on non-type template argument declared noreturn)

	PR c++/79967
	* decl.c (grokdeclarator): Check ATTRLIST before dereferencing it.

	* g++.dg/cpp0x/gen-attrs-63.C: New test.

From-SVN: r246039

gcc/cp/ChangeLog

+2017-03-10  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/79967
+	* decl.c (grokdeclarator): Check ATTRLIST before dereferencing it.
+
 2017-03-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/79899

gcc/cp/decl.c

@@ -11402,7 +11402,8 @@ grokdeclarator (const cp_declarator *declarator,
 
   if (declarator
       && declarator->kind == cdk_id
-      && declarator->std_attributes)
+      && declarator->std_attributes
+      && attrlist != NULL)
     /* [dcl.meaning]/1: The optional attribute-specifier-seq following
        a declarator-id appertains to the entity that is declared.  */
     *attrlist = chainon (*attrlist, declarator->std_attributes);

gcc/testsuite/ChangeLog

+2017-03-10  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/79967
+	* g++.dg/cpp0x/gen-attrs-63.C: New test.
+
 2017-03-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/79899

gcc/testsuite/g++.dg/cpp0x/gen-attrs-63.C

+// PR c++/79967
+// { dg-do compile { target c++11 } }
+
+template <void f [[noreturn]]()>
+struct A
+{
+  int g () { f (); return 0; }
+};
+
+void f ();
+
+void g (A<f> a) { a.g (); }