http://d.puremagic.com/issues/show_bug.cgi?id=6956

           Summary: std.algorithm.remove problem with
                    SwapStrategy.unstable
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody@puremagic.com
        ReportedBy: bearophile_hugs@eml.cc


--- Comment #0 from bearophile_hugs@eml.cc 2011-11-15 16:38:31 PST ---
This is a spin off of bug 6849. Problem partially found by Steven Schveighoffer.


import std.stdio, std.algorithm;
void main() {
     int[] data1 = [10, 20, 30, 40];
     writeln(remove(data1, 1));
     writeln(data1);
     int[] data2 = [10, 20, 30, 40];
     writeln(remove!(SwapStrategy.unstable)(data2, 1));
     writeln(data2);
}

Output, DMD 2.057head:

[10, 30, 40]
[10, 30, 40, 40]
[40, 20, 30]
[40, 20, 30, 40]


So with SwapStrategy.unstable it seems index 0 was removed, not index 1.

Expected output:

[10, 30, 40]
[10, 30, 40, 40]
[10, 40, 30]
[10, 40, 30, 40]

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SomeDude <lovelydear@mailmetrash.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |lovelydear@mailmetrash.com
         Resolution|                            |DUPLICATE


--- Comment #1 from SomeDude <lovelydear@mailmetrash.com> 2012-04-22 03:10:47 PDT ---
*** This issue has been marked as a duplicate of issue 5224 ***

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Andrej Mitrovic <andrej.mitrovich@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |andrej.mitrovich@gmail.com


--- Comment #2 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2012-05-25 08:37:54 PDT ---
I don't know if a bug is opened about this but it seems relevant:

import std.algorithm;
import std.stdio;

void main()
{
   int[] a = [1, 2, 3];
   a = a.remove(3);
   writeln(a);
}

writes [1, 2]

This should throw since index 3 is out of bounds.

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--- Comment #3 from bearophile_hugs@eml.cc 2012-05-25 10:14:13 PDT ---
(In reply to comment #2)
> I don't know if a bug is opened about this but it seems relevant:

This is a closed (because it's a duplicate) bug, so I suggest you to copy that
stuff elsewhere.

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