PR c++/79606 - ICE with this->base_member in NSDMI

	* class.c (build_base_path): Check processing_template_decl.

From-SVN: r245593

gcc/cp/ChangeLog

 2017-02-19  Jason Merrill  <jason@redhat.com>
 
+	PR c++/79606 - ICE with this->base_member in NSDMI
+	* class.c (build_base_path): Check processing_template_decl.
+
 	PR c++/79607 - ICE with T{} initializer
 	* decl.c (type_dependent_init_p): Check the type of a CONSTRUCTOR.
 

gcc/cp/class.c

@@ -375,6 +375,7 @@ build_base_path (enum tree_code code,
      set up properly yet, and the value doesn't matter there either; we're
      just interested in the result of overload resolution.  */
   if (cp_unevaluated_operand != 0
+      || processing_template_decl
       || in_template_function ())
     {
       expr = build_nop (ptr_target_type, expr);

gcc/testsuite/g++.dg/cpp0x/nsdmi-template16.C

+// PR c++/79606
+// { dg-do compile { target c++11 } }
+
+struct A
+{
+  int i = 0;
+};
+
+template<int> struct B : A
+{
+  int j = this->i;
+};
+
+B<0> b;