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digitalmars.D.bugs - [Issue 11292] New: Cannot re-initialize a const field in postblit

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=11292

           Summary: Cannot re-initialize a const field in postblit
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: samukha voliacable.com



PDT ---
struct S
{
    immutable int x;

    this(int x)
    {
        this.x = x;
    }

    this(this) {
        x = 1;
    }
}

void main() {
    S s = S(1);
    S s2 = s;
}

Error: can only initialize const member x inside constructor

Postblit is a constructor. Why re-initialization is allowed for the state
copied from .init and not for the state copied from the source struct?

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Oct 18 2013
parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=11292


Kenji Hara <k.hara.pg gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid





 struct S
 {
     immutable int x;
 
     this(int x)
     {
         this.x = x;
     }
 
     this(this) {
         x = 1;
     }
 }
 
 void main() {
     S s = S(1);
     S s2 = s;
 }
 
 Error: can only initialize const member x inside constructor
 
 Postblit is a constructor. Why re-initialization is allowed for the state
 copied from .init and not for the state copied from the source struct?


This is definitely a compiler bug.

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Oct 21 2013