On Thu, Aug 17, 2017 at 6:52 AM, Joseph Myers <joseph@codesourcery.com> wrote:
> On Sat, 8 Jul 2017, H.J. Lu wrote:
>
>> +@item -Wpacked-not-aligned @r{(C, C++, Objective-C and Objective-C++ only)}
>> +@opindex Wpacked-not-aligned
>> +@opindex Wno-packed-not-aligned
>> +Warn if a structure field with explicitly specified alignment in a
>> +packed struct or union is misaligned.  For example, a warning will
>> +be issued on @code{struct S}, like, @code{warning: alignment 1 of
>> +'struct S' is less than 8}, in this code:
>
> Use @samp for warnings quoted in the manual, as previously discussed.
>
> OK with that change, in the absence of C++ maintainer objections within 48
> hours.
>

Here is the updated patch.  I moved c++ changes to merge_decls, where
alignment is merged,  and check_bitfield_type_and_width, where bit-fields
are checked.

Tested on x86-64 and i686.


-- 
H.J.