On Tue, Sep 15, 2020 at 01:51:48PM -0700, Richard Henderson wrote: > On 9/15/20 1:19 PM, Eduardo Habkost wrote: > > Once we move to C11, we can just use max_align_t. > > Yes. > > > While we don't move to C11, why not just use > > __alignof__(union { long l; void *p; double d; long double ld;}) > > ? > > For i386, this is 4.
Is i386-linux the only case where there are additional alignment guarantees not covered by C99? I would prefer a i386-linux-specific #ifdef for that case instead of guessing based on undocumented libc internals. -- Eduardo