[Issue 24387] New: Base class construction ignores private

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24387

          Issue ID: 24387
           Summary: Base class construction ignores private
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: snarwin+bugzilla at gmail.com

As of DMD 2.107.0, the following program compiles without errors:

--- lib.d
module lib;

class Base
{
    private this(int n) {}
}
--- app.d
module app;

import lib;

class Derived : Base
{
    this() { super(42); }
}
---

According to the language spec [1], private symbols can only be accessed from
within the module that defines them. The section on base class construction [2]
does not mention any exception to that rule. Therefore, if the spec is correct,
the super(42) call should not compile.

[1] https://dlang.org/spec/attribute.html#private
[2] https://dlang.org/spec/class.html#base-construction

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