[Issue 21353] New: 'With()' statement ignores symbol visibility in some cases.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21353

          Issue ID: 21353
           Summary: 'With()' statement ignores symbol visibility in some
                    cases.
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: boris2.9 at gmail.com

Bug exposed while looking at issue 21351

imp.d
------------------
struct A { int x; }
struct B { import imp : A; }  // imports are private by default
private struct P { }


test.d
------------------
import imp;

void main()
{
    B.A;
    with (B) { A(0); }
    with (B()) { A(0); }

    imp.P();
    with (imp) { P(); }
}

The above code fails with the following output:

test.d(5): Error: no property A for type imp.B
test.d(6): Error: no property A for type imp.B
test.d(7): Error: cannot implicitly convert expression __withSym of type B* to
int
test.d(9): Error: undefined identifier P in module imp
test.d(10): Error: P() has no effect

Note that lines 7 and 10 should fail with same error as theirs respective forms
without 'with' statement because the symbols A and P are private.

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