[lug] g++ signals and exceptions question
zlynx at acm.org
Wed May 15 10:59:47 MDT 2002
I should probably ask this question on one of the C++ newsgroups, but I
haven't had decent newsgroup access for a few months now. On to the
I was thinking that it would be pretty neat if a C++ program could catch
a signal and raise an exception. I tried throwing an exception from a
signal handler, but that only resulted in a messy crash. I'm sure this
is because signal handlers use a completely different program stack
Functions such as siglongjmp can manipulate the original program stack
and go somewhere else. Does anyone know of a C++ (it can be g++ / Linux
specific) function or library that would allow raising an exception from
a signal handler?
If it doesn't exist, I might try writing it.
Do any of you who are experienced C++ programmers see anything wrong
with this idea? One problem I thought of is that it might violate
exception restrictions (functions that declare they will never throw, or
will only throw exceptions of type int, for example.)
jbriggs at esoft.com
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