Re: cygwin and SIGSEGV addr

[Igor Pechtchanski <pechtcha at cs dot nyu dot edu>]

On Sun, 1 Feb 2004, Daniel Diaz wrote:

> Hi
>
> I'm the author of GNU Prolog and to improve my cygwin port I need to be
> able to obtain the address that caused a SIGSEGV when I trap it inside a
> handler. I cannot find any documentation on this. Could you help me
> please ?
>
> Thank you for your attention.
>      Daniel Diaz

Daniel,

It is better to address questions of this sort to the official Cygwin
mailing list (see <http://cygwin.com/lists.html#available-lists>).  Not
only are you going to get access to more expertise than any one person can
provide, but your question (and the others' answers)  will be stored in
the (searchable) list archives for people to find later. I'm redirecting
this query to the appropriate cygwin mailing list, and setting the
Reply-To: accordingly.

To answer your question, you seem to be asking about SA_SIGINFO-style
contexts.  These aren't implemented in Cygwin (yet), but CGF (one of the
core maintainers of Cygwin) has mentioned that with some of his upcoming
changes, SA_SIGINFO support will be available.  You might want to watch
the CVS commits to see when this happens, and then either wait for a
snapshot or build your own DLL.  Note that once you do this, your
newly-built executable will have a versioned dependence, so you won't be
able to release it to people until the next official Cygwin release after
the necessary changes.

Alternatively, there were a couple of recipes posted on how to obtain this
information via the Win32 system calls.  Searching Google for "SA_SIGINFO
site:cygwin.com" should point you to those discussions.
	Igor
-- 
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