[Issue 7449] New: Algebraic's operator[] is incorrect

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=7449

           Summary: Algebraic's operator[] is incorrect
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nob...@puremagic.com
        ReportedBy: and...@metalanguage.com


--- Comment #0 from Andrei Alexandrescu <and...@metalanguage.com> 2012-02-05 
20:26:58 PST ---
import std.variant;
import std.stdio;

void main() {
    int[string] o;
    o["foo"] = 42;

    Variant a = o;
    Algebraic!(int[string], string) b = o;

    writeln(a["foo"]);
    writeln(b["foo"]);
}

The last line fails at runtime with an exception.

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