From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: unload_datafile( ) freezes - please help :(
Date: Sun, 20 Feb 2000 11:25:02 +0200
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On Fri, 18 Feb 2000, Damian Yerrick wrote:

> >The Allegro handler doesn't kill the program in response to ctrl+c
> >(that wouldn't be desirable for a majority of game/graphics type
> >applications), but it does have an emergency exit combo, ctrl+alt+del
> >or ctrl+alt+end, which is mapped onto the same thing (calls
> >__djgpp_hw_exception with %al = 0x79), which causes libc to print
> >the message about ctrl+c being pressed.
> 
> But skips the traceback.

No, this is a feature of the signal handling in the library (it's 
documented in the library docs, in the node which describes the `signal' 
function): Ctrl-C does not generate the traceback.  It also calls `exit' 
instead of `_exit', so it goes through all the normal exit code, 
including closing files, flushing buffers, invoking all atexit functions, 
calling static destructors, etc.