re PR c++/79457 (Segmentation fault in templated decltype evaluation)

	PR c++/79457
	* g++.dg/cpp0x/pr79457.C: New test.

From-SVN: r245344

gcc/testsuite/ChangeLog

+2017-02-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/79457
+	* g++.dg/cpp0x/pr79457.C: New test.
+
 2017-02-10  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* gcc.target/powerpc/fold-vec-mult-longlong.c: Don't do the

gcc/testsuite/g++.dg/cpp0x/pr79457.C

+// PR c++/79457
+// { dg-do compile { target c++11 } }
+
+template <typename T>
+class Foo
+{
+private:
+  T& goo;
+  template <typename R>
+  using S = decltype (goo[R ()]);
+
+public:
+  Foo (T& goo) : goo {goo} {}
+
+  template <typename R>
+  S<R> boo () {}
+};
+
+int
+main ()
+{
+  int bar[] = {1, 2, 3};
+  Foo<decltype (bar)> foo {bar};
+}