[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

FeepingCreature <default_357-line at yahoo.de> changed:

           What    |Removed                     |Added
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                 CC|                            |default_357-line at yahoo.de

--- Comment #1 from FeepingCreature <default_357-line at yahoo.de> ---
Not a dupe, but see also https://issues.dlang.org/show_bug.cgi?id=23947

I believe this whole class of issues arises from the use of
`mostVisibleOverload` in `checkAccess`: if only one of a set of overloads is
public, it considers all of them public. It's supposed to re-check permissions
once it has selected an overload, but it often does not do so.

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