pt.c (tsubst_decl): SET_DECL_IMPLICIT_INSTANTIATION before register_specialization.

	* pt.c (tsubst_decl) [VAR_DECL]: SET_DECL_IMPLICIT_INSTANTIATION
	before register_specialization.

From-SVN: r223461

gcc/cp/ChangeLog

 2015-05-20  Jason Merrill  <jason@redhat.com>
 
+	* pt.c (tsubst_decl) [VAR_DECL]: SET_DECL_IMPLICIT_INSTANTIATION
+	before register_specialization.
+
 	* decl.c (grok_op_properties): Don't complain about size_t
 	placement delete here.
 	* call.c (second_parm_is_size_t): Split out from...

gcc/cp/pt.c

@@ -11407,9 +11407,9 @@ tsubst_decl (tree t, tree args, tsubst_flags_t complain)
 	       processing here.  */
 	    DECL_EXTERNAL (r) = 1;
 
-	    register_specialization (r, gen_tmpl, argvec, false, hash);
 	    DECL_TEMPLATE_INFO (r) = build_template_info (tmpl, argvec);
 	    SET_DECL_IMPLICIT_INSTANTIATION (r);
+	    register_specialization (r, gen_tmpl, argvec, false, hash);
 	  }
 	else if (!cp_unevaluated_operand)
 	  register_local_specialization (r, t);

gcc/testsuite/g++.dg/cpp1y/var-templ27.C

+// { dg-do compile { target c++14 } }
+
+namespace A
+{
+  template <class T> int I = 0;
+  template <class T> int I<T*> = 42;
+}
+
+int i = A::I<void*>;