g++ & non-call-exceptions & sigsetjmp !

[Eljay Love-Jensen]

Hi Devrat,

I believe it is impossible to throw out of a signal handler.  Or out of any 
kind of callback (e.g., X11).  Any exception that hits a C-barrier will 
terminate the application.

You'll have to figure out a different mechanism to detect the signal 
condition in your program.  Perhaps by setting a volatile global variable 
within the signal handler, and checking that global at opportune times in 
your regular code.

HTH,
--Eljay