Generalize xfail check a bit.

llvm-svn: 206206
diff --git a/clang-tests-external/gdb/7.5/gdb/testsuite/gdb.cp/templates.exp b/clang-tests-external/gdb/7.5/gdb/testsuite/gdb.cp/templates.exp
index e76d20b..e277276 100644
--- a/clang-tests-external/gdb/7.5/gdb/testsuite/gdb.cp/templates.exp
+++ b/clang-tests-external/gdb/7.5/gdb/testsuite/gdb.cp/templates.exp
@@ -218,7 +218,7 @@
 	-re "There is no field named ~Baz\r\n$gdb_prompt $" {
 	    set test2 "verify GCC PR debug/51668"
 	    gdb_test_multiple "whatis intBazOne" $test2 {
-		-re "type = Baz<int, \\(char\\)'\\\\(x|0)01'>\r\n$gdb_prompt $" {
+		-re "type = Baz<int, \\(char\\)?'\\\\(x|0)01'>\r\n$gdb_prompt $" {
 		    setup_xfail gcc/51668 "*-*-*"
 		    xfail $test
 		    pass $test2