c/9072: -Wconversion should be split into two distinct flags

[Zack Weinberg]

Segher Boessenkool <segher@koffie.nl> writes:
> Zack Weinberg wrote:
>> 
>> I'm very much in favor of making -Wconversion more useful, but is
>> there any reason not to shift the argument-type-conversion warnings
>> entirely over to -Wtraditional?  Particularly if the warning is
>> avoided for prototypes in system headers (so that 'sinf' and the like
>> raise no complaints) -- this would, for instance, catch the occasional
>> problem we have with arguments of type 'bool' in GCC itself.
>> 
>> Then -Wconversion would be entirely for dubious type conversions on
>> assignment.
>
> This is the intended behaviour of my patch, modulo in my opinion passing
> a "too wide" argument to a function is a dubious assignment, too.

I may have misunderstood the effect of your patch - it seemed like you
would need to give both -Wconversion and -Wtraditional to get the
argument-type conversion warnings.  I was suggesting that this should
happen with just -Wtraditional.

zw