Re: Watchpoints for emacs lisp.

[Stefan Monnier]

>>> In which cases the access to this shared resource is concurrent?
>> If you build without -DSYNC_INPUT, Emacs may call malloc from
>> asynchronous signal handlers (yes, it's usually considered as a no-no in
>> Unix programming, which is why we have switched to SYNC_INPUT).
> In which situation it is useful to create new symbols in signal handlers ?

Without -DSYNC_INPUT we run a whole lot of code within the signal
handlers, so whether that code can create symbols or not, I don't know,
but figuring it out is difficult.  Hence -DSYNC_INPUT.


        Stefan