re PR c/55976 (-Werror=return-type should error on returning a value from a void function)

2018-06-28  David Pagan  <dave.pagan@oracle.com>

	PR c/55976
	* gcc.dg/noncompile/pr55976-1.c: Add dg-prune-output for extraneous
	message causing unexpected test FAIL.

From-SVN: r262215

gcc/testsuite/ChangeLog

+2018-06-28  David Pagan  <dave.pagan@oracle.com>
+
+	PR c/55976
+	* gcc.dg/noncompile/pr55976-1.c: Add dg-prune-output for extraneous
+	message causing unexpected test FAIL.
+
 2018-06-28  Martin Liska  <mliska@suse.cz>
 
 	* gcc.dg/tree-ssa/switch-1.c: New test.

gcc/testsuite/gcc.dg/noncompile/pr55976-1.c

 /* PR c/55976 */
 /* { dg-do compile } */
 /* { dg-options "-Werror=return-type" } */
+/* { dg-prune-output "some warnings being treated as errors" } */
 
 /* Verify warnings for return type become errors.  */