Require constructor priority support in c-c++-common/Wprio-ctor-dtor.c

	* c-c++-common/Wprio-ctor-dtor.c: Require init_priority support.

From-SVN: r264917

gcc/testsuite/ChangeLog

+2018-10-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* c-c++-common/Wprio-ctor-dtor.c: Require init_priority support.
+
 2018-10-08  Martin Liska  <mliska@suse.cz>
 
 	* g++.dg/ext/pr82625.C: Add dg-compile filter.

gcc/testsuite/c-c++-common/Wprio-ctor-dtor.c

 /* { dg-do compile } */
+/* { dg-require-effective-target init_priority } */
 /* { dg-options "-Wno-prio-ctor-dtor" } */
 
 void construct1 () __attribute__ ((constructor (10)));