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Re: "finish" command leads to SIGTRAP
- From: David Griffiths <dgriffiths at undo dot io>
- To: Pedro Alves <palves at redhat dot com>
- Cc: gdb at sourceware dot org
- Date: Thu, 21 Feb 2019 12:13:05 +0000
- Subject: Re: "finish" command leads to SIGTRAP
- References: <CA++j6c7bhP7=AWWdzBajC7KUah1gwj25-Bpoqd1-Xs_67z5kVw@mail.gmail.com> <b437759f-5223-fcd2-1e68-f77051a2f910@redhat.com>
Ok thanks, did that. If I compare the output for the bad case with the good
case, this seems to be the main difference:
< infrun: proceed: resuming Thread 0x7ffff7fd8700 (LWP 12901)
< infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current
thread [Thread 0x7ffff7fd8700 (LWP 12901)] at 0x7ffff6d33b00
< LLR: Preparing to resume Thread 0x7ffff7fd8700 (LWP 12901), 0,
inferior_ptid Thread 0x7ffff7fd8700 (LWP 12901)
< LLR: PTRACE_CONT Thread 0x7ffff7fd8700 (LWP 12901), 0 (resume event
thread)
---
> infrun: step-over queue now empty
> infrun: resuming [Thread 0x7ffff7fd8700 (LWP 12901)] for step-over
> infrun: resume (step=1, signal=GDB_SIGNAL_0), trap_expected=1, current
thread [Thread 0x7ffff7fd8700 (LWP 12901)] at 0x7ffff6d33b00
> LLR: Preparing to step Thread 0x7ffff7fd8700 (LWP 12901), 0,
inferior_ptid Thread 0x7ffff7fd8700 (LWP 12901)
> LLR: PTRACE_SINGLESTEP Thread 0x7ffff7fd8700 (LWP 12901), 0 (resume event
thread)
10a11
> infrun: proceed: [Thread 0x7ffff7fd8700 (LWP 12901)] resumed
27c28,60
< infrun: random signal (GDB_SIGNAL_TRAP)
---
> infrun: no stepping, continue
> infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current
thread [Thread 0x7ffff7fd8700 (LWP 12901)] at 0x7ffff6d33b01
Cheers,
David
On Thu, 21 Feb 2019 at 11:24, Pedro Alves <palves@redhat.com> wrote:
> On 02/21/2019 11:21 AM, David Griffiths wrote:
> >
> > I need it to work because I'm trying to automate something via gdb/MI.
> Any
> > suggestions as to how to debug this would be very welcome.
>
> Start with "set debug infrun 1".
>
> And then "set debug lin-lwp 1" if debugging natively, or
> "set debug remote 1" if using the remote serial protocol.
>
> Thanks,
> Pedro Alves
>
--
David Griffiths, Senior Software Engineer
Undo <https://undo.io> | Resolve even the most challenging software defects
with software flight recorder technology
Software reliability report: optimizing the software supplier and customer
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<https://info.undo.io/software-reliability-report-optimizing-supplier-and-customer-relationship>