mixin template had error by calling shared function

[Vlasov Roman via Digitalmars-d-learn]

On Wednesday, 10 December 2014 at 10:34:25 UTC, Marc Schütz wrote:
> On Wednesday, 10 December 2014 at 09:41:43 UTC, Rikki 
> Cattermole wrote:
>> On 10/12/2014 10:10 p.m., Vlasov Roman wrote:
>>> I have this code
>>>
>>> import std.stdio;
>>>
>>> mixin template Template(void function() func1, void 
>>> function() func2) {
>>>
>>>    void     to() {
>>>        func1();
>>>        func2();
>>>    }
>>> };
>>>
>>> class SomeClass {
>>>    mixin Template!(&func, &func23);
>>>
>>>    void func() {
>>>        writeln("First function!");
>>>    }
>>>
>>>    void func23() {
>>>        writeln("First function!");
>>>    }
>>>
>>>    void toTemplate() {
>>>        to();
>>>    }
>>> }
>>>
>>> void main() {
>>>    SomeClass a = new SomeClass();
>>>
>>>    a.toTemplate();
>>> }
>>>
>>> After running the program give me SIGSEGV in func23();
>>>
>>> Terminal with gdb:
>>>
>>> Program received signal SIGSEGV, Segmentation fault.
>>> 0x0000000000428352 in invariant._d_invariant(Object) ()
>>> (gdb) up
>>> #1  0x00000000004257f7 in main.SomeClass.func23() ()
>>>
>>>
>>> Manjaro Linux 0.9.0 x86_64
>>> dmd 2.066
>>> Kernel 3.14.4
>>
>> Ugh, that's a compiler bug.
>> You should not be able to pass in delegates as function 
>> pointers to a mixin template.
>>
>> A better way would be to pass in the names of the methods into 
>> the mixin template and then use string mixin's to call the 
>> methods.
>
> Better yet, try this:
>
> mixin template Template(void delegate() func1, void delegate() 
> func2)

I tried this, but compiler give me error

main.d(12): Error: no 'this' to create delegate for func
main.d(12): Error: no 'this' to create delegate for func23

I think that error because i don't completly know dlang