Thread overview
[Issue 325] New: Overriding members and overloading with alias causes bogus error messages in with().
Sep 06, 2006
d-bugmail
Sep 07, 2006
Thomas Kuehne
Sep 19, 2006
d-bugmail
September 06, 2006
http://d.puremagic.com/issues/show_bug.cgi?id=325

           Summary: Overriding members and overloading with alias causes
                    bogus error messages in with().
           Product: D
           Version: unspecified
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: chris@dprogramming.com


I finally was able to reproduce this problem with a small example:

// Code begin
class Base
{
        private char[] myfoo;
        private char[] mybar;

        // Get/set properties that will be overridden.
        void foo(char[] s) { myfoo = s; }
        char[] foo() { return myfoo; }

        // Get/set properties that will not be overridden.
        void bar(char[] s) { mybar = s; }
        char[] bar() { return mybar; }
}

class Derived: Base
{
        alias Base.foo foo; // Bring in Base's foo getter.
        override void foo(char[] s) { super.foo = s; } // Override foo setter.
}

void main()
{
        Derived d;
        with(d = new Derived)
        {
                foo = "hi"; // Error! Due to the alias up there.
                d.foo = "hi"; // Works
                bar = "hi";
        }
}
// Code end

DMD 0.161 through 0.166 output: test.d(26): need 'this' to access member text

I was able to find a workaround, simply put the alias after the function in the class instead of before.


-- 

September 07, 2006
d-bugmail@puremagic.com schrieb am 2006-09-06:
> http://d.puremagic.com/issues/show_bug.cgi?id=325

> I finally was able to reproduce this problem with a small example:
>
> // Code begin
> class Base
> {
>         private char[] myfoo;
>         private char[] mybar;
>
>         // Get/set properties that will be overridden.
>         void foo(char[] s) { myfoo = s; }
>         char[] foo() { return myfoo; }
>
>         // Get/set properties that will not be overridden.
>         void bar(char[] s) { mybar = s; }
>         char[] bar() { return mybar; }
> }
>
> class Derived: Base
> {
>         alias Base.foo foo; // Bring in Base's foo getter.
>         override void foo(char[] s) { super.foo = s; } // Override foo setter.
> }
>
> void main()
> {
>         Derived d;
>         with(d = new Derived)
>         {
>                 foo = "hi"; // Error! Due to the alias up there.
>                 d.foo = "hi"; // Works
>                 bar = "hi";
>         }
> }
> // Code end
>
> DMD 0.161 through 0.166 output: test.d(26): need 'this' to access member text
>
> I was able to find a workaround, simply put the alias after the function in the class instead of before.

Added to DStress as http://dstress.kuehne.cn/run/w/with_15_A.d http://dstress.kuehne.cn/run/w/with_15_B.d http://dstress.kuehne.cn/run/w/with_15_C.d http://dstress.kuehne.cn/run/w/with_15_D.d

Thomas


September 19, 2006
http://d.puremagic.com/issues/show_bug.cgi?id=325


bugzilla@digitalmars.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




------- Comment #2 from bugzilla@digitalmars.com  2006-09-19 15:28 -------
Fixed in DMC 0.167.


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