PR c++/65154

	* init.c (build_vec_init): Fix initializing aggregates
	with empty init list.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@221704 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 53 insertions, 5 deletions

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index e3699f63c04..684129b2200 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2015-03-26  Mikhail Maltsev  <maltsevm@gmail.com>
+
+	PR c++/65154
+	* init.c (build_vec_init): Fix initializing aggregates
+	with empty init list.
+
 2015-03-26  Jason Merrill  <jason@redhat.com>
 
 	PR c++/65525
diff --git a/gcc/cp/init.c b/gcc/cp/init.c
index 0274663c8f4..957a7a4e6e8 100644
--- a/gcc/cp/init.c
+++ b/gcc/cp/init.c
@@ -3716,11 +3716,7 @@ build_vec_init (tree base, tree maxindex, tree init,
 	{
 	  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);
+	      init = build_constructor (init_list_type_node, NULL);
 	      CONSTRUCTOR_IS_DIRECT_INIT (init) = true;
 	    }
 	  else
diff --git a/gcc/testsuite/g++.dg/init/array39.C b/gcc/testsuite/g++.dg/init/array39.C
new file mode 100644
index 00000000000..2fd89377162
--- /dev/null
+++ b/gcc/testsuite/g++.dg/init/array39.C
@@ -0,0 +1,46 @@
+// PR c++/65154
+// { dg-do run { target c++11 } }
+
+int cnt1 = 0,
+    cnt2 = 0;
+
+struct S_empty
+{
+    S_empty () {
+	cnt1++;
+    };
+};
+
+struct C1
+{
+  S_empty s;
+};
+
+struct S_init
+{
+  S_init () : i(42)
+  {
+    cnt2++;
+  };
+  int i;
+};
+
+struct C2
+{
+  S_init a, b;
+};
+
+int
+main ()
+{
+  C1 c1[5]{};
+  C2 c2[1]{};
+
+  if (c2[0].a.i != 42 || c2[0].b.i != 42)
+    return 1;
+
+  if (cnt1 != 5 || cnt2 != 2)
+    return 1;
+
+  return 0;
+}