http://d.puremagic.com/issues/show_bug.cgi?id=6948

           Summary: Possible bug in compiler or documentation regarding
                    signature of opCmp()
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: kukac@mailinator.com


--- Comment #0 from kukac@mailinator.com 2011-11-14 13:07:07 PST ---
The documentation http://www.digitalmars.com/d/2.0/arrays.html writes that "For the .sort property to work on arrays of structs or unions, the struct or union definition must define the function: int opCmp(S) or int opCmp(S*)". That is misleading, as, in my experience, a struct must implement exactly "int opCmp(ref const S) const" in order to get .sort work. Signatures which are a bit different do not work.

The documentation should be updated as soon as possible, either informing the programmer about a current bug in the compiler, or clearly stating that only this signature works! In addition, I think that the compiler should warn about using a likely incorrect signature.

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Alex Rønne Petersen <xtzgzorex@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xtzgzorex@gmail.com


--- Comment #1 from Alex Rønne Petersen <xtzgzorex@gmail.com> 2011-11-14 13:20:44 PST ---
It is by design that only that specific overload works (see The D Programming Language). The documentation is wrong here.

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |spec
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |FIXED


--- Comment #2 from Walter Bright <bugzilla@digitalmars.com> 2012-01-21 01:02:40 PST ---
https://github.com/D-Programming-Language/d-programming-language.org/commit/955530833c2221e934f24dd4f0c431b724e4db58

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