Re: warnings compiling Emacs 22 on amd64

[Kevin Gallagher]

Richard Stallman wrote:
> I think we should demand some way to turn off the warning in specific
> places.  Does GCC have a feature to turn off warnings in a specific
> piece of code?  I don't remember.  It would be a good feature to have.
>
> However, a specific feature just for this kind of warning would also
> be useful.  I have an idea for what it could look like: an extra cast.
>
>       if ((int)(short)foo > (int)SHRT_MAX || (int)(short)foo < (int)SHRT_MIN)
>
> (short) would be a way of saying "yes I know this is a short", and
> this could suppress the warning.
>
> What do you think of that feature?
>   
Some compilers support the use of #pragma directives to disable certain 
warnings it would
otherwise generate for the lines wrapped within those specific #pragma 
directives.  Perhaps
GCC could be extended to support this.

I think this, or some other in line compiler directive, is a better way 
to instruct the compiler
how to behave, rather than a modification of the source code itself.