PR testsuite/86510 - test case g++.dg/warn/pr86453.C fails starting with r262596

gcc/testsuite/ChangeLog:
	g++.dg/warn/pr86453.C: Adjust.

From-SVN: r262609

gcc/testsuite/ChangeLog

+2018-07-12  Martin Sebor  <msebor@redhat.com>
+
+	PR testsuite/86510
+	g++.dg/warn/pr86453.C: Adjust.
+
 2018-07-12  Jim Wilson  <jimw@sifive.com>
 
 	* gnat.dg/warn5.adb: Expect warning for riscv*-*-*.

gcc/testsuite/g++.dg/warn/pr86453.C

 // { dg-do compile }
 // { dg-additional-options "-flto" { target lto } }
 struct X {
-  int *__attribute__((aligned(2), packed)) a; // { dg-warning "attribute ignored" }
+  int *__attribute__((aligned(2), packed)) a; // { dg-warning "ignoring attribute .packed. because it conflicts with attribute .aligned." }
 } b;