Scoped local variables

[Jason House]

Denton Cockburn Wrote:

> On Fri, 07 Dec 2007 09:52:07 -0500, Jason House wrote:
> 
> > I'm having my code crash when I add in scope variables.  While it works
> > in some cases, it doesn't in others.  I've whittled down my current
> > problem to code that looks like:
> > 
> > unittest{
> >   scope T t = new T();
> > }
> > 
> > "T" has a bunch of arrays that it allocates and fills when it's
> > constructed.  I'm currently confused how this code would cause a crash. 
> > Any insights would be much appreciated.
> 
> Need more information.
> What's the message given when it crashes?

It's a windows error:
housebot-0.7 has encountered a problem and needs to close.  We are sorry for the inconvenience. If you were in the middle of something, the information you were working on might be lost.


> Is the cause of the crash the fact that it's scoped?  

As best as I can tell.

> Have you tried without scope?

Yes, it works flawlessly without the scope.

> Are you sure it's not in the constructor of T?

I am now.  I stripped it down to an empty constructor and removed all member variables.

Since posting, I've reduced this down to a simple example.  This example sometimes crashes dmd itself instead of producing a crashing executable. I'm using dmd 1.018 with Tango 0.99.  Now that I know it's dmd and not me, I may try upgrading the version of dmd that I use.

version=crash;
//version=work1;
//version=work2;
//version=work3;

interface I{
}

class C : public I{
}

unittest{
        version(crash) scope I def = new C;
        version(work1) scope C def = new C;
        version(work2)       I def = new C;
        version(work3)       C def = new C;
}

int main(){
        return 0;
}