This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 115b. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2024-08-20
[Voted into the WP at the February, 2012 meeting; moved to DR at the October, 2012 meeting.]
According to 7.6.2.6 [expr.alignof] paragraph 1,
An alignof expression yields the alignment requirement of its operand type. The operand shall be a type-id representing a complete object type or an array thereof or a reference to a complete object type.
This (presumably unintentionally) excludes a reference to an array with an unknown bound but a complete element type; the bound is not needed to determine the alignment of the array.
Proposed resolution (August, 2011):
Change 7.6.2.6 [expr.alignof] paragraph 1 as follows:
An alignof expression yields the alignment requirement of its operand type. The operand shall be a type-id representing a complete object type or an array thereof or a reference toa complete object typeone of those types.