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digitalmars.D.bugs - dmd 101: crash

reply Regan Heath <regan netwin.co.nz> writes:
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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Sep 12 2004
parent reply Tyro <ridimz_at yahoo.dot.com> writes:
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
Sep 12 2004
parent reply Regan Heath <regan netwin.co.nz> writes:
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/
Sep 12 2004
parent Tyro <ridimz_at yahoo.dot.com> writes:
 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
Sep 12 2004