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-rw-r--r--gcc/cp/ChangeLog6
-rw-r--r--gcc/cp/tree.c7
-rw-r--r--gcc/testsuite/ChangeLog4
-rw-r--r--gcc/testsuite/g++.dg/ext/flexary2.C11
4 files changed, 27 insertions, 1 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index a57f978..d841686 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2011-01-14 Jason Merrill <jason@redhat.com>
+
+ PR c++/46688
+ * tree.c (build_vec_init_expr): Handle flexible array
+ properly.
+
2011-01-13 Kai Tietz <kai.tietz@onevision.com>
PR c++/47213
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index 213279a..813b88d 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -474,7 +474,12 @@ build_vec_init_expr (tree type, tree init)
what functions are needed. Here we assume that init is either
NULL_TREE, void_type_node (indicating value-initialization), or
another array to copy. */
- if (init == void_type_node)
+ if (integer_zerop (array_type_nelts_total (type)))
+ {
+ /* No actual initialization to do. */;
+ init = NULL_TREE;
+ }
+ else if (init == void_type_node)
{
elt_init = build_value_init (inner_type, tf_warning_or_error);
value_init = true;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index c67c37c..9851be4 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2011-01-14 Jason Merrill <jason@redhat.com>
+
+ * g++.dg/ext/flexary2.C: New.
+
2011-01-14 Richard Guenther <rguenther@suse.de>
PR middle-end/47281
diff --git a/gcc/testsuite/g++.dg/ext/flexary2.C b/gcc/testsuite/g++.dg/ext/flexary2.C
new file mode 100644
index 0000000..4855b3f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/flexary2.C
@@ -0,0 +1,11 @@
+// PR c++/46688
+// { dg-options "" }
+
+struct A {
+ A(int);
+};
+
+struct B {
+ B() {}
+ A a[];
+};