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Re: Assert in linux_nat_resume


Daniel Jacobowitz wrote:
On Tue, Aug 12, 2008 at 03:21:40PM -0400, Marc Ferland wrote:
I'm pretty sure it has something to do with my program but I don't know where to start (Debugging with printf() is a rather tedious task!). Any help would be greatly appreciated.

The first thing to try is definitely a snapshot of current CVS GDB.


I tried with 6.8.50.20080812-cvs seems to have a similar problem.


[New LWP 29169]
linux-nat.c:1669: internal-error: linux_nat_resume: Assertion `lp != NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.


After further testing, this seems to happen only when I have a breakpoint somewhere inside a thread. The first time I hit the breakpoint everything is fine. But if I exit a thread and recreate it, I get the previously mentioned message.

I also found a workaround:
- The first time I hit the breakpoint, I delete it;
- I place a breakpoint on the pthread_join() call for this thread;
- When I break on the pthread_join() call, I recreate the breakpoint inside the thread;


This way, I'm able to break inside the thread every time I create it (pthread_create()).

Marc


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