re PR c++/79360 (ICE with NSDMI and enum in union)

Fix PR c++/79360

gcc/cp/ChangeLog:

	PR c++/79360
	* typeck2.c (process_init_constructor_union): Consider only
	FIELD_DECLs when looking for an NSDMI.

gcc/testsuite/ChangeLog:

	PR c++/79360
	* g++.dg/cpp1y/nsdmi-union2.C: New test.

From-SVN: r245239

gcc/cp/ChangeLog

+2017-02-07  Patrick Palka  <ppalka@gcc.gnu.org>
+
+	PR c++/79360
+	* typeck2.c (process_init_constructor_union): Consider only
+	FIELD_DECLs when looking for an NSDMI.
+
 2017-02-06  Jason Merrill  <jason@redhat.com>
 
 	PR c++/71193 - incomplete types in templates

gcc/cp/typeck2.c

@@ -1510,7 +1510,8 @@ process_init_constructor_union (tree type, tree init,
     {
       for (tree field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
 	{
-	  if (DECL_INITIAL (field))
+	  if (TREE_CODE (field) == FIELD_DECL
+	      && DECL_INITIAL (field) != NULL_TREE)
 	    {
 	      CONSTRUCTOR_APPEND_ELT (CONSTRUCTOR_ELTS (init),
 				      field,

gcc/testsuite/ChangeLog

+2017-02-07  Patrick Palka  <ppalka@gcc.gnu.org>
+
+	PR c++/79360
+	* g++.dg/cpp1y/nsdmi-union2.C: New test.
+
 2017-02-06  Kito Cheng  <kito.cheng@gmail.com>
 
 	* lib/target-supports.exp: Define the RISC-V target.

gcc/testsuite/g++.dg/cpp1y/nsdmi-union2.C

+// PR c++/79360
+// { dg-do compile { target c++14 } }
+
+union U
+{
+  enum E { e };
+};
+
+struct A
+{
+  U u{};
+};