[Issue 4246] New: Delegate literals passed to variadic templates function incorrectly

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4246

           Summary: Delegate literals passed to variadic templates
                    function incorrectly
           Product: D
           Version: future
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: sandford at jhu.edu


--- Comment #0 from Rob Jacques <sandford at jhu.edu> 2010-05-28 14:17:47 PDT ---
I found this while playing with delegate literals and map. Thankfully, map and
non-variadic templates don't compile with delegate literals, but this example
does:

import std.stdio: writeln;
import std.range;
import std.algorithm;

template bar(fun...) {
    auto bar(int[] r) {
        return fun[0](r.front);
    }
}

void main(string[] args) {
    int[] x = [1,2,3,4,5];
    int y = 6;

    auto dg = (int t){ return t + y; };

    auto list  = bar!( dg )(x);
    auto list2 = bar!( (int t){ return t + y; } )(x);
    writeln(list,'\t',list2);

    return;
}

This prints out the correct value (7) when a delegate is passed in, but the
delegate literal call results in a random printed number.

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