Struct reference returning function and const members

[Tom]

El 03/03/2011 03:47, Ali Çehreli escribió:
> On 03/02/2011 10:42 PM, Tom wrote:
>> I have...
>>
>> int main(string[] args) {
>> auto s1 = f(); // MH MH
>> auto s2 = g(); // OK
>> s2.c = null; // OK
>> return 0;
>> }
>>
>> class C {}
>>
>> struct StructWithConstMember {
>> this(int i, C c) { this.i=i; this.c=c; }
>> int i;
>> const(C) c;
>> }
>>
>> struct StructWithoutConstMember {
>> this(int i, C c) { this.i=i; this.c=c; }
>> int i;
>> C c;
>> }
>>
>> ref StructWithConstMember f() {
>> return * new StructWithConstMember(1, new C); // ERROR
>> }
>>
>> ref StructWithoutConstMember g() {
>> return * new StructWithoutConstMember(1, new C); // OK
>> }
>>
>>
>> And get the error...
>> src\main.d(27): Error: *new StructWithConstMember(1,new C) is not mutable
>>
>> So I can't return a struct that has a const member? Why? Am I missing
>> something something?
>>
>> Thanks,
>> Tom;
>
> I don't know the full answer but returning a reference to const object
> works:
>
> ref const(StructWithConstMember) f() {
> return * new StructWithConstMember(1, new C); // now compiles
> }
>
> Ali
>

I know, but I don't want a const struct. It's like if const transitivity 
were going backwards, or something.

:(