bugGNU Octave - Bugs: bug #39587, Assertion failure with profexplore...


bug #39587: Assertion failure with profexplore after profile erroneous use: Assertion `active_fcn != call_tree' failed.

Submitter:  Philipp Kutin <pkutin>
Submitted:  Sun 28 Jul 2013 08:01:16 AM UTC
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * dev Operating System:  * GNU/Linux
Fixed Release:  None Planned Release:  None
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Wed 14 May 2014 09:04:53 PM UTC, comment #5: 

This should be fixed by this changeset on the development branch (http://hg.savannah.gnu.org/hgweb/octave/rev/b45d975aa38f).  The "problem" is that the assert statements were written with the assumption that profile would always be called from the top-level command line.  If profile() is used within an m-file to enable/disable profiling then the asserts would fire and cause the crash.  My solution was simply to comment out the incorrect assert statements in the code.

Rik <rik5>
Project Administrator
Fri 11 Oct 2013 12:04:10 AM UTC, comment #4: 

To be clear, this causes Octave abort with:
octave: corefcn/profiler.cc:108: profile_data_accumulator::tree_node* profile_data_accumulator::tree_node::exit(octave_idx_type): Assertion `fcn_id == fcn' failed.
Abort (core dumped)
Should be blocker for 3.8

Michael Godfrey <godfrey>
Project Member
Thu 10 Oct 2013 08:03:38 PM UTC, comment #3: 

Right.  It was properly classified before as a "Crash" which it does do.  But it isn't a regression.

Rik <rik5>
Project Administrator
Thu 10 Oct 2013 07:51:49 PM UTC, comment #2: 

What was the previous bug report?

What previous version of Octave did this not cause trouble?

John W. Eaton <jwe>
Project Administrator
Thu 10 Oct 2013 07:46:57 PM UTC, comment #1: 

Confirmed on a recent tip  (10/10/13).  This should be fixed before the 3.8 release.

Rik <rik5>
Project Administrator
Sun 28 Jul 2013 08:01:16 AM UTC, original submission:  

To reproduce, run the first demo of the attached prof_demo.m file (added since previous bug report):

Or, on the Octave prompt:

prof_test(1)  --> OK
prof_test(1)  --> will error, since issuing "profile clear" with active profiler
prof_test(2)  --> assertion failure

Philipp Kutin <pkutin>


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Attach Files:

Attached Files
file #28678:  prof_test.m added by pkutin (432B - text/x-objcsrc)


Depends on the following items: None found

   bug dependencies.


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    Follow 10 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-07-08 lachlan Dependencies- bugs #46315 is dependent
    2014-05-16 rik5 DependenciesRemoved dependency from bugs #41780 -
    2014-05-14 rik5 StatusConfirmed Fixed
        Open/ClosedOpen Closed
    2014-03-14 efferre79 Carbon-Copy- Added efferre79
    2014-03-14 rik5 Dependencies- bugs #41780 is dependent
    2013-10-10 rik5 Item GroupRegression Segfault, Bus Error, etc.
    2013-10-10 rik5 StatusNone Confirmed
    2013-10-10 rik5 Item GroupSegfault, Bus Error, etc. Regression
    2013-07-28 pkutin Attached File- Added prof_test.m, #28678

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