1 files changed, 32 insertions, 25 deletions

diff --git a/gcc-4.9/gcc/cp/init.c b/gcc-4.9/gcc/cp/init.c
index ecb103a99..283843ae9 100644
--- a/gcc-4.9/gcc/cp/init.c
+++ b/gcc-4.9/gcc/cp/init.c
@@ -3565,19 +3565,11 @@ build_vec_init (tree base, tree maxindex, tree init,
       try_block = begin_try_block ();
     }
 
-  /* If the initializer is {}, then all elements are initialized from {}.
-     But for non-classes, that's the same as value-initialization.  */
+  bool empty_list = false;
   if (init && BRACE_ENCLOSED_INITIALIZER_P (init)
       && CONSTRUCTOR_NELTS (init) == 0)
-    {
-      if (CLASS_TYPE_P (type))
-	/* Leave init alone.  */;
-      else
-	{
-	  init = NULL_TREE;
-	  explicit_value_init_p = true;
-	}
-    }
+    /* Skip over the handling of non-empty init lists.  */
+    empty_list = true;
 
   /* Maybe pull out constant value when from_array? */
 
@@ -3697,14 +3689,8 @@ build_vec_init (tree base, tree maxindex, tree init,
 	    vec_free (new_vec);
 	}
 
-      /* Any elements without explicit initializers get {}.  */
-      if (cxx_dialect >= cxx11 && AGGREGATE_TYPE_P (type))
-	init = build_constructor (init_list_type_node, NULL);
-      else
-	{
-	  init = NULL_TREE;
-	  explicit_value_init_p = true;
-	}
+      /* Any elements without explicit initializers get T{}.  */
+      empty_list = true;
     }
   else if (from_array)
     {
@@ -3750,6 +3736,26 @@ build_vec_init (tree base, tree maxindex, tree init,
 
       to = build1 (INDIRECT_REF, type, base);
 
+      /* If the initializer is {}, then all elements are initialized from T{}.
+	 But for non-classes, that's the same as value-initialization.  */
+      if (empty_list)
+	{
+	  if (cxx_dialect >= cxx11 && AGGREGATE_TYPE_P (type))
+	    {
+	      if (BRACE_ENCLOSED_INITIALIZER_P (init)
+		  && CONSTRUCTOR_NELTS (init) == 0)
+		/* Reuse it.  */;
+	      else
+		init = build_constructor (init_list_type_node, NULL);
+	      CONSTRUCTOR_IS_DIRECT_INIT (init) = true;
+	    }
+	  else
+	    {
+	      init = NULL_TREE;
+	      explicit_value_init_p = true;
+	    }
+	}
+
       if (from_array)
 	{
 	  tree from;
@@ -3854,6 +3860,13 @@ build_vec_init (tree base, tree maxindex, tree init,
 
   stmt_expr = finish_init_stmts (is_global, stmt_expr, compound_stmt);
 
+  current_stmt_tree ()->stmts_are_full_exprs_p = destroy_temps;
+
+  if (errors)
+    return error_mark_node;
+  if (const_init)
+    return build2 (INIT_EXPR, atype, obase, const_init);
+
   /* Now make the result have the correct type.  */
   if (TREE_CODE (atype) == ARRAY_TYPE)
     {
@@ -3863,12 +3876,6 @@ build_vec_init (tree base, tree maxindex, tree init,
       TREE_NO_WARNING (stmt_expr) = 1;
     }
 
-  current_stmt_tree ()->stmts_are_full_exprs_p = destroy_temps;
-
-  if (const_init)
-    return build2 (INIT_EXPR, atype, obase, const_init);
-  if (errors)
-    return error_mark_node;
   return stmt_expr;
 }