[Issue 12339] New: "alais this" not considered for qualified conversion

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=12339

           Summary: "alais this" not considered for qualified conversion
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: monarchdodra at gmail.com


--- Comment #0 from monarchdodra at gmail.com 2014-03-10 12:06:28 PDT ---
I'd expect an implicit "const S" => "S" conversion to work if an "alias this"
call allows it.

//------------
//alias T = int; //OK
alias T = S;   //FAIL

static struct S
{
    int* p;
    T asMutable() const;
    alias asMutable this;
}

void main()
{
    immutable S s;
    T ss = s;
}
//------------

I see this as a needless limitation: The fact that the types match should not
prevent the alias this call from happening.

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