tree.c (handle_nodiscard_attribute): Improve warning location.

/cp
2019-01-03  Paolo Carlini  <paolo.carlini@oracle.com>

	* tree.c (handle_nodiscard_attribute): Improve warning location.

/testsuite
2019-01-03  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/cpp1z/nodiscard3.C: Test locations too.

From-SVN: r267547

gcc/cp/ChangeLog

+2019-01-03  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* tree.c (handle_nodiscard_attribute): Improve warning location.
+
 2019-01-02  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/88612 - ICE with -Waddress-of-packed-member.

gcc/cp/tree.c

@@ -4372,7 +4372,8 @@ handle_nodiscard_attribute (tree *node, tree name, tree /*args*/,
   if (TREE_CODE (*node) == FUNCTION_DECL)
     {
       if (VOID_TYPE_P (TREE_TYPE (TREE_TYPE (*node))))
-	warning (OPT_Wattributes, "%qE attribute applied to %qD with void "
+	warning_at (DECL_SOURCE_LOCATION (*node),
+		    OPT_Wattributes, "%qE attribute applied to %qD with void "
 		    "return type", name, *node);
     }
   else if (OVERLOAD_TYPE_P (*node))

gcc/testsuite/ChangeLog

+2019-01-03  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* g++.dg/cpp1z/nodiscard3.C: Test locations too.
+
 2019-01-03  Martin Liska  <mliska@suse.cz>
 
 	PR testsuite/88436

gcc/testsuite/g++.dg/cpp1z/nodiscard3.C

@@ -13,8 +13,8 @@ typedef struct { char big[1024]; fnt fn; } C;
 struct [[nodiscard]] D { int i; D(); ~D(); };
 
 WUR E check1 (void);
-WUR void check2 (void); /* { dg-warning "nodiscard" } */
-WUR int foo;		/* { dg-warning "nodiscard" } */
+WUR void check2 (void); /* { dg-warning "10:.nodiscard." } */
+WUR int foo;		/* { dg-warning "9:.nodiscard." } */
 int bar (void);
 WURAI E check3 (void) { return (E)bar (); }
 WUR A check4 (void);