[PATCH] ctype: Fix bitfield types on 16-bit targets
Brian Inglis
Brian.Inglis@SystematicSw.ab.ca
Wed Jul 25 10:03:00 GMT 2018
On 2018-07-20 11:37, Hans-Bernhard Bröker wrote:
> Am 20.07.2018 um 13:07 schrieb Sebastian Huber:
>> -Â unsigned int first: 24; -Â unsigned short delta; +Â uint_least32_t
>> first: 24; +Â uint_least16_t delta;
> Unfortunately that makes the code's correctness implementation-defined,
> because it now depends on what the underlying implementation's take on
> the constraint C99 6.7.2.1p4 is:
> Â Â Â Â A bit-field shall have a type that is a qualified or unqualified
>     version of _Bool, signed int, unsigned int, or some other  Â
> Â Â Â Â implementation-defined type.
> i.e. compilers are not required to allow uint32_least_t in this place.
Old code breaks existing implementations; those implementations do support it:
if others have problems, another patch can fix that; please feel free to propose
a better patch.
--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
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