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

           Summary: static alias this broken in 2.055
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: rejects-valid
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: thecybershadow@gmail.com


--- Comment #0 from Vladimir Panteleev <thecybershadow@gmail.com> 2011-09-12 15:59:19 PDT ---
Not sure if this is by design, this works in 2.054 but not in 2.055:

struct A { }

struct B
{
    static alias A this;
}

Possibly related: Issue 5622

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

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


--- Comment #1 from Kenji Hara <k.hara.pg@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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Vladimir Panteleev <thecybershadow@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P2                          |P3


--- Comment #2 from Vladimir Panteleev <thecybershadow@gmail.com> 2011-09-17 20:36:07 PDT ---
You're right, thanks. I was mistaken in thinking that it worked in 2.054.

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


--- Comment #3 from Kenji Hara <k.hara.pg@gmail.com> 2011-09-17 20:37:06 PDT ---
https://github.com/D-Programming-Language/dmd/pull/390

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |FIXED


--- Comment #4 from Walter Bright <bugzilla@digitalmars.com> 2011-09-20 14:07:28 PDT ---
https://github.com/D-Programming-Language/dmd/commit/b8c6670efd260e156ad1a2b58a58aecd28537078

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