http://d.puremagic.com/issues/show_bug.cgi?id=4041

           Summary: Error with ref or auto ref return from opOpAssign
           Product: D
           Version: 2.041
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: aldacron@gmail.com


--- Comment #0 from Mike Parker <aldacron@gmail.com> 2010-04-01 18:26:25 PDT ---
##############################
struct Foo
{
    int x;

    ref Foo opOpAssign(string op)(ref Foo f) if(op == "+=")
    {
        x += f.x;
        return this;
    }
}

void main()
{
    Foo f1 = Foo(1);
    Foo f2 = Foo(2);
    f2 += f1;
}
#################################

Results in:

refret.d(5): Error: variable refret.Foo.op only parameters or foreach
declaratio
ns can be ref

Change the return type from 'ref Foo' to 'auto ref Foo' and the same error occurs. Remove the ref from the return and it compiles. Comment out the 'f2 += f1' and it compiles.

This happens on both 2.041 and 2.042. I haven't tried earlier versions.

BTW, 2.042 is missing from the version list here on Bugzilla.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=4041


Shin Fujishiro <rsinfu@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |samukha@voliacable.com


--- Comment #1 from Shin Fujishiro <rsinfu@gmail.com> 2010-09-25 18:19:48 PDT ---
*** Issue 4934 has been marked as a duplicate of this issue. ***

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=4041


Kenji Hara <k.hara.pg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |k.hara.pg@gmail.com


--- Comment #2 from Kenji Hara <k.hara.pg@gmail.com> 2011-06-20 02:17:53 PDT ---
Trivial fix of sample code:
----
struct Foo
{
    int x;

    ref Foo opOpAssign(string op)(ref Foo f) if(op == "+")  // <- "+="
    {
        x += f.x;
        return this;
    }
}
void main()
{
    Foo f1 = Foo(1);
    Foo f2 = Foo(2);
    f2 += f1;
}
----

And, on dmd 2.054 (d36b3b12fc4814e59f3a0d680b8700e787b1ceff) this code has
passed to compile.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=4041


yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |yebblies@gmail.com
           Platform|x86                         |All
            Version|2.041                       |D2
         Resolution|                            |WORKSFORME
         OS/Version|Windows                     |All


--- Comment #3 from yebblies <yebblies@gmail.com> 2012-02-01 21:10:52 EST ---
I can't reproduce this.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------