http://d.puremagic.com/issues/show_bug.cgi?id=2359

           Summary: typeof(this) gives the wrong type in template mixins
           Product: D
           Version: 1.035
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: leo.dahlmann@gmail.com


Code:
---------------
extern(C) int printf(char*, ...);

class A
{
    mixin Mix;
}

class B
{
    mixin Mix;
}

template Mix()
{
    void foo()
    {
        printf("%.*s\n", typeof(this).classinfo.name);
    }
}

void main()
{
    (new A).foo();
    (new B).foo();
}
---------------

Output with any dmd since 1.032:

main.A
main.A

This shows that typeof(this) in B.foo returns A.

With dmd 1.031 the (imo correct) output is:

main.A
main.B


-- 

d-bugmail@puremagic.com wrote:
> http://d.puremagic.com/issues/show_bug.cgi?id=2359
> 
>            Summary: typeof(this) gives the wrong type in template mixins
>            Product: D
>            Version: 1.035
>           Platform: PC
>         OS/Version: Windows
>             Status: NEW
>           Keywords: wrong-code
>           Severity: normal
>           Priority: P2
>          Component: DMD
>         AssignedTo: bugzilla@digitalmars.com
>         ReportedBy: leo.dahlmann@gmail.com
> 
> 
> Code:
> ---------------
> extern(C) int printf(char*, ...);
> 
> class A
> {
>     mixin Mix;
> }
> 
> class B
> {
>     mixin Mix;
> }
> 
> template Mix()
> {
>     void foo()
>     {
>         printf("%.*s\n", typeof(this).classinfo.name);
>     }
> }
> 
> void main()
> {
>     (new A).foo();
>     (new B).foo();
> }
> ---------------
> 
> Output with any dmd since 1.032:
> 
> main.A
> main.A
> 
> This shows that typeof(this) in B.foo returns A.
> 
> With dmd 1.031 the (imo correct) output is:
> 
> main.A
> main.B
> 
> 

Use extra parenthesis as a workaround:
(typeof(this))

http://d.puremagic.com/issues/show_bug.cgi?id=2359





------- Comment #1 from h3r3tic@mat.uni.torun.pl  2009-01-16 08:54 -------
Appears to be fixed with DMD 1.039, probably related to http://d.puremagic.com/issues/show_bug.cgi?id=2527


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=2359


Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |clugdbug@yahoo.com.au
         Resolution|                            |FIXED




--- Comment #2 from Don <clugdbug@yahoo.com.au>  2009-09-04 02:49:13 PDT ---
This works now. Clearly the same as bug 2527.

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