2016-04-06  Nathan Sidwell  <nathan@acm.org>

	PR c++/70501
	* constexpr.c (cxx_eval_bare_aggregate): Handle VECTOR_TYPE
	similarly to PMF.

	* g++.dg/init/pr70501.C: New.

Index: cp/constexpr.c
===================================================================
--- cp/constexpr.c	(revision 234768)
+++ cp/constexpr.c	(working copy)
@@ -2370,10 +2370,10 @@ cxx_eval_bare_aggregate (const constexpr
   tree type = TREE_TYPE (t);
 
   constexpr_ctx new_ctx;
-  if (TYPE_PTRMEMFUNC_P (type))
+  if (TYPE_PTRMEMFUNC_P (type) || VECTOR_TYPE_P (type))
     {
-      /* We don't really need the ctx->ctor business for a PMF, but it's
-	 simpler to use the same code.  */
+      /* We don't really need the ctx->ctor business for a PMF or
+	 vector, but it's simpler to use the same code.  */
       new_ctx = *ctx;
       new_ctx.ctor = build_constructor (type, NULL);
       new_ctx.object = NULL_TREE;
Index: testsuite/g++.dg/init/pr70501.C
===================================================================
--- testsuite/g++.dg/init/pr70501.C	(nonexistent)
+++ testsuite/g++.dg/init/pr70501.C	(working copy)
@@ -0,0 +1,11 @@
+/* { dg-options "" } Not pedantic */
+
+typedef int v4si __attribute__ ((vector_size (16)));
+
+struct S { v4si v; };
+
+void
+fn2 (int i, int j)
+{
+  struct S s = { .v = i <= j + (v4si){(1, 2)} };
+}