class A {
  const int b;
  this()
  {
    b = 2;
  }
}

void main()
{
  A a = new A();
  a.b = 5; //remove this line, no crash
}

D:\D\src\temp>dmd const.d
const.d(5): b is not an lvalue
<crash>

Regan

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Regan Heath wrote:

> class A {
>   const int b;
>   this()
>   {
>     b = 2;
>   }
> }
> 
> void main()
> {
>   A a = new A();
>   a.b = 5; //remove this line, no crash
> }
> 
> D:\D\src\temp>dmd const.d
> const.d(5): b is not an lvalue
> <crash>
> 
> Regan
> 
Isn't this intended behavior? A const must be defined not declared (ie., It's value must be know upon first encounter).  And once known, such value cannot be overridden.

Andrew

On Sun, 12 Sep 2004 21:37:56 -0400, Tyro <ridimz_at@yahoo.dot.com> wrote:
> Regan Heath wrote:
>
>> class A {
>>   const int b;
>>   this()
>>   {
>>     b = 2;
>>   }
>> }
>>
>> void main()
>> {
>>   A a = new A();
>>   a.b = 5; //remove this line, no crash
>> }
>>
>> D:\D\src\temp>dmd const.d
>> const.d(5): b is not an lvalue
>> <crash>
>>
>> Regan
>>
> Isn't this intended behavior? A const must be defined not declared (ie., It's value must be know upon first encounter).  And once known, such value cannot be overridden.

Yes, the error is correct, line 5 is "b = 2;" in the ctor for the class. However, the compiler crashes when it sees the "a.b = 5;" line, that is the bug.

Regan

-- 
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

> Yes, the error is correct, line 5 is "b = 2;" in the ctor for the class. However, the compiler crashes when it sees the "a.b = 5;" line, that is the bug.
> 
> Regan
> 

I C. Thanks for clarifying!

Andrew