bugGNU Octave - Bugs: bug #48574, With GCC 6.x, an error in an...


bug #48574: With GCC 6.x, an error in an onCleanup function causes Octave to crash

Submitted by:  John W. Eaton <jwe>
Submitted on:  Wed 20 Jul 2016 11:28:45 PM UTC  
Category:  Interpreter Severity:  5 - Blocker
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Fixed Assigned to:  John W. Eaton <jwe>
Originator Name:  jwe Open/Closed:  Closed
Release:  dev Operating System:  Any

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Fri 22 Jul 2016 04:28:29 PM UTC, comment #1: 

I checked in the following changeset:


John W. Eaton <jwe>
Project AdministratorIn charge of this item.
Wed 20 Jul 2016 11:28:45 PM UTC, original submission:  

GCC 6 now warns

../libinterp/octave-value/ov-oncleanup.cc: In destructor 'virtual octave_oncleanup::~octave_oncleanup()':
../libinterp/octave-value/ov-oncleanup.cc:92:7: warning: throw will always call terminate() [-Wterminate]
../libinterp/octave-value/ov-oncleanup.cc:92:7: note: in C++11 destructors default to noexcept

and an error in an onCleanup function can trigger this problem.  The following is sufficient to demonstrate the bug:

function foo ()
  onCleanup (@() error ('oops!'));

A possible fix is attached.

Maybe we should also display the message from the last error along with the new warning about an error in the cleanup function?

What does Matlab do for something like this?

John W. Eaton <jwe>
Project AdministratorIn charge of this item.


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Attach Files:

Attached Files
file #37966:  diffs.txt added by jwe (888B - text/plain)


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-07-22 jwe StatusPatch Submitted => Fixed
        Open/ClosedOpen => Closed
    2016-07-20 jwe Attached File- => Added diffs.txt, #37966

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