double free in Assistant's destructor (API v2.4)

[Yann Leydier <yann leydier info>]

Hi,

I'm facing a crash when closing an Assistant on win32 (no crash on 
linux, and valgrind does not report anything suspicious). The 
Assistant's close and cancel signals are bound to a member function that 
simply contains "delete this;".

The crash occurs in an internal class of sigc++: a signal seems to be 
disconnected twice since the debuger displays that a function pointer of 
value 0xfeefee is called with another pointer of address 0xfeefee as 
argument.

Is there any precaution when using Assistant that must be taken? Are 
there limitations on the widgets that can be attached to an Assistant?

Is calling "delete this" legit on a Widget? If not, what are the 
alternatives (I tried to delay the delete with a timeout callback, but 
it changed nothing)?

Thanks a lot,
yann