[Bug middle-end/87237] __atomic_load on 4-byte-sized, 1-byte-aligned struct is not atomic

[richard-gccbugzilla at metafoo dot co.uk]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87237

--- Comment #4 from Richard Smith <richard-gccbugzilla at metafoo dot co.uk> ---
(In reply to Alexander Monakov from comment #3)
> With GCC size/align are 3/1 while with Clang it's 4/4 as you said

Oh sorry, you're right, I'd forgotten about this ABI discrepancy. We really
need to get the psABI fixed to say one way or the other! :)