[PR c++/83667] Fix tree_dump ICE

https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00218.html
	PR c++/83667
	* g++.dg/ipa/pr83667.C: Fix regex, require alias.

From-SVN: r256254

gcc/testsuite/ChangeLog

+2018-01-04  Nathan Sidwell  <nathan@acm.org>
+
+	PR c++/83667
+	* g++.dg/ipa/pr83667.C: Fix regex, require alias.
+
 2018-01-04  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/83666

gcc/testsuite/g++.dg/ipa/pr83667.C

-/* { dg-options "-fdump-ipa-inline" } */
-// c++/83667 ICE dumping a static thunk
+// { dg-require-alias "" }
+// { dg-options "-fdump-ipa-inline" }
+// c++/83667 ICE dumping a static thunk when TARGET_USE_LOCAL_THUNK_ALIAS_P
+
 
 struct a
 {
@@ -20,4 +22,4 @@ struct c : a, b
 
 c c;
 
-// { dg-final { scan-ipa-dump "summary for void c::\\*.LTHUNK0" "inline" } }
+// { dg-final { scan-ipa-dump "summary for void c::\[^\\n\]*THUNK0" "inline" } }