[Issue 23991] [REG2.087.0] Private top-level overloads are callable if any overload is public

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23991

--- Comment #4 from Vladimir Panteleev <dlang-bugzilla at thecybershadow.net> ---
OK, but I am curious why the test program above correctly failed to compile
before 2.087.0. In other words, how can this be a long-standing issue and a
regression at the same time?

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