[Issue 7948] New: std.range.zip broken with requireSameLength

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7948

           Summary: std.range.zip broken with requireSameLength
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: jens.k.mueller at gmx.de


--- Comment #0 from jens.k.mueller at gmx.de 2012-04-20 07:02:16 PDT ---
unittest                                                                        
{                                                                               
    import std.algorithm;                                                       
    import std.range;                                                           
    int[] a = [ 1, 2, 3 ];                                                      
    string[] b = [ "a", "b", "c" ];                                             
    sort!("a[0] > b[0]")(zip(StoppingPolicy.requireSameLength, a, b));          
    assert(a == [ 3, 2, 1 ]);                                                   
    assert(b == [ "c", "b", "a" ]);                                             
}

fails with
phobos/std/range.d(3563): Invalid Zip object

but is expected to pass (the provided ranges have the same length). The
checking code in range.d is wrong.

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