Re: Floating Point Exception Handling

[Jim Wilson <wilson at specifixinc dot com>]

John L. Kulp wrote:
> I'd like to get connected with whomever is working on topics like the
> interaction between SIGFPE handlers and try/catch stack unwinding in
> C++.

There are few people expert in this area, and they are all very busy 
people.  There may not be anyone who has time to help you.

Unwinding from signal handlers should work fine for any IA-64 target. 
For other targets, it is probably iffy.  Our EH support was designed for 
C++ which does not need this.  It has been expanded to support Java 
which does need this, but this requires special options 
(-fnon-call-exceptions), and probably still needs more work to handle 
all cases.

You might try looking at the optional libunwind package.  This was 
primarily written to support IA-64 target, but it also has some support 
for gcc's DWARF2 CFI based unwinders.  Also, you might find other people 
interested in the same topic on the libunwind mailing list.  See
	http://www.hpl.hp.com/research/linux/libunwind/
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com