[PATCH] C frontend: cast-expressions sometimes retain type qualifiers

[Patrick Palka]

On Sun, Aug 17, 2014 at 8:27 AM, Marek Polacek <polacek@redhat.com> wrote:
> On Sat, Aug 16, 2014 at 09:54:33PM -0400, Patrick Palka wrote:
>> --- a/gcc/c/c-typeck.c
>> +++ b/gcc/c/c-typeck.c
>> @@ -4947,6 +4947,8 @@ build_c_cast (location_t loc, tree type, tree expr)
>>         || TREE_CODE (type) == UNION_TYPE)
>>       pedwarn (loc, OPT_Wpedantic,
>>                "ISO C forbids casting nonscalar to the same type");
>> +
>> +      value = convert (type, value);
>
> Maybe a comment saying why we convert the value here anyway would be
> useful.  Otherwise LGTM.

OK, I'll add the comment "Convert to remove any qualifiers from
VALUE's type" to the patch.