[Issue 15215] Erroneous error messages in to!IntegralType conversions

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15215

--- Comment #4 from hsteoh at quickfur.ath.cx ---
I dunno, the unittest in my PR is a bit hackish. Maybe you should rebase your
PR and checkout the better unittests?

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