sync-4.C: Add dg-xfail-run-if for darwin.

2019-01-05  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	* g++.dg/ext/sync-4.C: Add dg-xfail-run-if for darwin.

From-SVN: r267592

gcc/testsuite/ChangeLog

+2019-01-05  Dominique d'Humieres  <dominiq@gcc.gnu.org>
+
+	* g++.dg/ext/sync-4.C: Add dg-xfail-run-if for darwin.
+
 2019-01-04  Martin Sebor  <msebor@redhat.com>
 
 	PR c/88546

gcc/testsuite/g++.dg/ext/sync-4.C

 /* { dg-do run { target hppa*-*-hpux* *-*-linux* *-*-gnu* powerpc*-*-darwin* *-*-darwin[912]* } } */
+/* FIXME The following additional option should be removed after the fix for radr://19802258.
+/* { dg-xfail-run-if "PR60563 radr://19802258" { *-*-darwin* } } */
 /* { dg-require-effective-target sync_long_long_runtime } */
 /* { dg-options "-fexceptions -fnon-call-exceptions -O2" } */
 /* { dg-additional-options "-march=pentium" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */