[Issue 6656] static alias this broken in 2.055

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=6656


Kenji Hara <k.hara.pg at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|rejects-valid               |diagnostic
           Severity|regression                  |normal


--- Comment #1 from Kenji Hara <k.hara.pg at gmail.com> 2011-09-17 20:31:37 PDT ---
This is not regression, is diagnostic issue.

Originally "alias this" only accepts a member symbol of an aggregate itself
belongs. Therefore the code in comment #0 is invalid because A is lies outside
of B.

By fixing bug 6561, it has been fixed in 2.055, invalid alias this always
prints "undefined identifier" error. In this case, we cannot use A as B's alias
this symbol, but we can lookup A from inside B. Then this is *diagnostic* issue
that the message is not sufficiently descriptive.


In 2.054, following code doesn't work.
----
struct A
{
    static void foo(){}
}
struct B
{
    static alias A this;
}
void main()
{
    B.foo();  // want to call A.foo, but fails
}
----
If this issue is 'regression', above code should work in 2.054, but doesn't.

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