scope(exit) & stack => double free or corruption (fasttop) ... help?

[Charles Hixson]

On 02/24/2013 05:39 PM, H. S. Teoh wrote:
> On Sun, Feb 24, 2013 at 03:14:01PM -0800, Charles Hixson wrote:
>> Given a struct with:
>>
>> ~this()
>> {  close();	}
>>
>> void	close()
>> {  if	(currentKey !is null)	currentKey	=	null;
>>     if	(cursor is null)	return;
>>     tcbdbcurdel(cursor);
>> }
>>
>> and:
>>
>>    scope (exit)	if (bdb !is null)  tcbdbclose(bdb);
>>    //scope(exit)	cur.close;	   //<<- cur is the struct noted above
> [...]
>
> The struct dtor is automatically called upon exiting the scope, so your
> scope(exit) here is redundant, and is the cause of the double free.
>
>
> T
>

Sorry, but that wasn't the answer...which was trivial, when I saw it.  I 
needed to change the close() routine to:
void	close()
{  if	(currentKey !is null)	currentKey	=	null;
    if	(cursor is null)	return;
    tcbdbcurdel(cursor);
    cursor  = null;
}

Apparently the library didn't null the cursor after it closed (deleted) it.