[Issue 5020] New: Forward implicit bool conversions to alias this

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5020

           Summary: Forward implicit bool conversions to alias this
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: rsinfu at gmail.com


--- Comment #0 from Shin Fujishiro <rsinfu at gmail.com> 2010-10-08 12:14:52 PDT ---
Alias this isn't implemented for implicit conversions to bool in conditional
expressions.  The following presumably valid code doesn't compile:
--------------------
void main()
{
    S s;
    if (!s) {}  // (4)
}
struct S
{
    bool cond;
    alias cond this;
}
--------------------
% dmd -o- -c test.d
test.d(4): Error: expression s of type S does not have a boolean value

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