#9583: Unhandled SIGSEGV with 4.5.2.alpha0 on t2
-----------------------+----------------------------------------------------
Reporter: mpatel | Owner: drkirkby
Type: defect | Status: new
Priority: blocker | Milestone: sage-4.5.2
Component: solaris | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
-----------------------+----------------------------------------------------
Comment(by drkirkby):
John said he did not know how to use GDB. These were the steps I took,
which made finding this easy. I would add, it is often '''much''' more
difficult to find the bugs - I perhaps got lucky here
* Start Sage with {{{sage -gdb}}}
* Lucilly it crashed immediately, saying it was at
{{{__pyx_pf_4sage_4libs_8singular_6option_27LibSingularOptions_abstract_load}}}
* I put a breakpoint on that with {{{ br
__pyx_pf_4sage_4libs_8singular_6option_27LibSingularOptions_abstract_load}}}
* Restarted the program. It broke at
{{{__pyx_pf_4sage_4libs_8singular_6option_27LibSingularOptions_abstract_load}}}
as expected.
* I stepped into that bit of code using {{{s}}} which is short for
{{{step}}}
* I used {{{n}}}, which is short for {{{next}}} to execute one line at a
time.
* After using {{{next}}} once, just hitting return will run {{{next
again}}}. For some reason I typed it a few times, but that was not
necessary.
Dave
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9583#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
