Change dg-warning to db-bogus in a test-case (PR testsuite/86445).

2018-07-10  Martin Liska  <mliska@suse.cz>

        PR testsuite/86445
	* gcc.dg/pr84100.c: Change it back to dg-bogus.

From-SVN: r262540

gcc/testsuite/ChangeLog

+2018-07-10  Martin Liska  <mliska@suse.cz>
+
+        PR testsuite/86445
+	* gcc.dg/pr84100.c: Change it back to dg-bogus.
+
 2018-07-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR sanitizer/86406

gcc/testsuite/gcc.dg/pr84100.c

@@ -8,7 +8,7 @@ __attribute__((optimize ("align-loops=16", "align-jumps=16",
 			 "align-labels=16", "align-functions=16")))
 void
 foo (void)
-{			/* { dg-warning "bad option" } */
+{			/* { dg-bogus "bad option" } */
   for (int i = 0; i < 1024; ++i)
     bar ();
 }