mailing-list for TeXmacs Users

[Kamaraju S Kusumanchi <address@hidden>]

Enrique Perez-Terron wrote:

> I have had a look at the source code. Widgets are ref-counted, and
> automatically deleted when the refcount comes down to zero.
> 
> Setting a breakpoint in the destructor for edit_interface_rep, I found
> the refcount was zero. However, when if calls is_attached(this) a new
> reference is created, and when this reference is deleted as it goes out
> of scope, the reference count goes to zero again. This initiates a
> second call to the destructor for the same object.
> 
> The reference is created because is_attached() is declared to take a
> 'widget' object, ie a reference-counting pointer. The 'this' pointer is
> just a pointer, but the compiler constructs a temporary 'widget' object.
> 
> I tried to add a boolean "is_dying" to the base class holding the
> reference counter, and an additional condition before deleting, so it
> only deletes if the refcount becomes zero and is_dying is false.
> 

One Debian user reported a similar problem on
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=496355 . It seemed to have
been fixed in 1.0.6.15 according to that report. Could you please upgrade
to 1.0.6.15 and check the crash again?

thanks
raju
-- 
Kamaraju S Kusumanchi
http://www.people.cornell.edu/pages/kk288/
http://malayamaarutham.blogspot.com/