commit ab873d428ec43d33d1e34567749104cc5a9544ad
Author: Jason Merrill <jason@redhat.com>
Date: Mon Apr 1 15:45:54 2013 -0400
PR c++/56794
* parser.c (cp_parser_range_for): Don't try to do auto deduction
in a template if the type of the range is incomplete.
@@ -9615,7 +9615,10 @@ cp_parser_range_for (cp_parser *parser, tree scope, tree init, tree range_decl)
range_expr = error_mark_node;
stmt = begin_range_for_stmt (scope, init);
finish_range_for_decl (stmt, range_decl, range_expr);
- if (!type_dependent_expression_p (range_expr)
+ if (range_expr != error_mark_node
+ && !type_dependent_expression_p (range_expr)
+ /* The length of an array might be dependent. */
+ && COMPLETE_TYPE_P (TREE_TYPE (range_expr))
/* do_auto_deduction doesn't mess with template init-lists. */
&& !BRACE_ENCLOSED_INITIALIZER_P (range_expr))
do_range_for_auto_deduction (range_decl, range_expr);
new file mode 100644
@@ -0,0 +1,15 @@
+// PR c++/56794
+// { dg-require-effective-target c++11 }
+
+template<int... values>
+static void Colors()
+{
+ static const int colors[] = { values... };
+
+ for(auto c: colors) { }
+}
+
+int main()
+{
+ Colors<0,1,2> ();
+}