Messages in this thread | | | Subject | just-in-time debugging? | From | Tony Hoyle <> | Date | 28 Apr 2001 21:17:10 +0100 |
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Is there a way (kernel or userspace... doesn't matter) that gdb/ddd could be invoked when a program is about to dump core, or perhaps on a certain signal (that the app could deliver to itself when required). The latter case is what I need right now, as I have to debug an app that breaks seemingly randomly & I need to halt when certain assertions fail. Core dumps aren't much use as you can't resume them, otherwise I'd just force a segfault or something.
I had a look at the do_coredump stuff and it looks like it could be altered to call gdb in the same way that modprobe gets called by kmod... however I don't sufficiently know the code to work out whether it'd work properly or not.
A patch to glibc would perhaps be better, but I know that code even less!
Something like responding to SIGTRAP would probably be ideal.
Tony
--
"Two weeks before due date, the programmers work 22 hour days cobbling an application from... (apparently) one programmer bashing his face into the keyboard." -- Dilbert
tmh@magenta-netlogic.com http://www.nothing-on.tv
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