gcc4: throwing exception from signal handler
Dave Korn
dave.korn.cygwin@gmail.com
Thu Jul 8 16:40:00 GMT 2010
On 08/07/2010 14:01, Don Ward wrote:
> I would like to be able to catch certain signals (SIGSEGV and SIGSYS)
> and throw a C++ exception (to be caught in a try/catch construct). As a
> simple example:
> Am I misunderstanding how this should work or doing something wrong? Or
> is this a problem with Cygwin or gcc?
Throwing exceptions from a signal handler is a can of worms that requires
support from both the compiler and the C runtime. I was working on adding
this support for the distro package of gcc-4.5 before I had to go AWOL a
couple of weeks ago; it requires building the Cygwin DLL with EH tables, and
adding support in the last-chance stack unwinder in libgcc that is able to
unwind past our sigfe/sigbe stuff.
I'll be back in the Cygwin/GCC world starting next week.
cheers,
DaveK
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
More information about the Cygwin
mailing list