[Issue 21176] deprecation inside template should show the instance loc as errorSupplemental

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21176

RazvanN <razvan.nitu1305 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |razvan.nitu1305 at gmail.com

--- Comment #1 from RazvanN <razvan.nitu1305 at gmail.com> ---
I cannot reproduce this issue on run.dlang.io. However, I get what you mean:

deprecated int a;

void foo(T)()
{
    alias F = a;
}

void main()
{
    foo!int;
}

If it's an error it does show the stack trace, however I am not convinced that
that should also be the case for deprecations.

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