[Bug libstdc++/66788] [4.9/5 Regression] Rejects instantiation of class std::deque with -m32

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66788

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Reduced testcase:

#include <cstdint>
#include <deque>
typedef uint64_t cl_ulong __attribute__((aligned(8)));
std::deque<cl_ulong> args_qualifier;