http://d.puremagic.com/issues/show_bug.cgi?id=9809

           Summary: Need a better diagnostic on accessing 'alias this' to
                    private symbols
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: andrej.mitrovich@gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2013-03-24 19:39:08 PDT ---
module foo;

struct S
{
    void func() { }
}

struct X
{
    public alias s this;
    private S s;
}

module test;

import foo;

void main()
{
    X x;
    x.func();
}

$ rdmd test.d
> test.d(8): Error: undefined identifier 'func'

I'm not exactly sure, perhaps the public alias to a private symbol should be disallowed in the first place. Otherwise a better diagnostic should be made.

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--- Comment #1 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2013-03-24 19:42:13 PDT ---
(In reply to comment #0)
> struct X
> {
>     public alias s this;
>     private S s;
> }

Btw, the reason I needed this is because I want 's' fields/methods to be accessible, but I do not want the user to be able to assign 's' to something else.

Perhaps I should have used:

struct NoAssign
{
    @disable void opAssign(T...)(T t) { }
    S s;
    alias s this;
}

struct X
{
    alias s this;
    NoAssign s;
}

Not too sure..

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Andrej Mitrovic <andrej.mitrovich@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WORKSFORME


--- Comment #2 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2013-09-17 16:12:24 PDT ---
The diagnostic in 2.063.2 is now:

> Error: struct foo.X member s is not accessible

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