re PR c++/81860 (Call to undefined inline function involving inheriting constructors)

	PR c++/81860
	* g++.dg/cpp0x/inh-ctor30.C: New test.

From-SVN: r256076

gcc/ChangeLog

+2018-01-02  Richard Biener  <rguenther@suse.de>
+
+	* ipa-inline.c (big_speedup_p): Fix expression.
+
 2018-01-02  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR target/81616

gcc/testsuite/ChangeLog

-2018-01-02  Richard Biener  <rguenther@suse.de>
+2018-01-02  Marek Polacek  <polacek@redhat.com>
 
-	* ipa-inline.c (big_speedup_p): Fix expression.
+	PR c++/81860
+	* g++.dg/cpp0x/inh-ctor30.C: New test.
 
 2018-01-01  Paul Thomas  <pault@gcc.gnu.org>
 

gcc/testsuite/g++.dg/cpp0x/inh-ctor30.C

+// PR c++/81860
+// { dg-do compile { target c++11 } }
+// { dg-final { scan-assembler "_ZN1AIjEC2Ev" } }
+
+template <typename T>
+struct A
+{
+  A() {}
+};
+
+struct B
+{
+  template <typename D>
+  B(D, const A<unsigned>& a = A<unsigned>()) : a(a) {}
+
+  A<unsigned> a;
+};
+
+struct C : B
+{
+  using B::B;
+};
+
+int main()
+{
+  C c(0);
+}