[Issue 15781] Template type deduction failure with same-type variables with different constness

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15781

--- Comment #1 from Kenji Hara <k.hara.pg at gmail.com> ---
Introduced in:
https://github.com/D-Programming-Language/dmd/pull/4818

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