short s, t; t = -s: no (longer) works: Deprecation: integral promotion not done for -s, use

[Steven Schveighoffer]

On 2/24/18 3:07 PM, kdevel wrote:
> I don't get the point of the deprecation message:
> 
> --- intprom.d
> import std.stdio;
> 
> void main ()
> {
>     short s, t;
>     t = -s;
> }
> ---

https://dlang.org/changelog/2.078.0.html#fix16997

> 
> $ dmd intprom.d
> intprom.d(6): Deprecation: integral promotion not done for -s, use 
> '-transition=intpromote' switch or -cast(int)(s)
> 
> What shall I do in order to get my template code
> 
> void mymain (T) ()
> {
>     :
>        b[i] = -b [i];
>     :
> }
> 
> compiled for any type for which negation is defined?

b[i] = cast(typeof(b[i]))-b[i];

And then use -transition=intpromote.

Note, your function wasn't real code, so maybe if you have the type of 
b[i] somewhere it might look better than what I wrote (like maybe 
cast(T)-b[i]).

-Steve