This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
The expansion of a range-based for in 8.6.5 [stmt.ranged] paragraph 1 involves a declaration of the form
auto && __range = range-init;
However, it is not permitted to bind a reference to an array of runtime bound (220.127.116.11 [dcl.ref] paragraph 5), even though it is intended that such arrays can be used in a range-based for.
Rationale (September, 2013):
Arrays of runtime bound were moved from the normative specification to a proposed Technical Specification.