bugGNU Octave - Bugs: bug #38851, (MATLAB) 'W' specifier in fopen

 
 

bug #38851: (MATLAB) 'W' specifier in fopen

Submitted by:  Guillaume <gyom>
Submitted on:  Mon 29 Apr 2013 03:18:49 PM UTC  
 
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  Fixed Assigned to:  John W. Eaton <jwe>
Originator Name:  Guillaume Open/Closed:  Closed
Release:  dev Operating System:  GNU/Linux

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Mon 29 Apr 2013 06:34:36 PM UTC, comment #3:

I checked in the following change:

http://hg.savannah.gnu.org/hgweb/octave/rev/2d968b7830d6

John W. Eaton <jwe>
Project AdministratorIn charge of this item.
Mon 29 Apr 2013 04:51:25 PM UTC, comment #2:

Oops, I see the problem. I'll fix it.

John W. Eaton <jwe>
Project AdministratorIn charge of this item.
Mon 29 Apr 2013 04:02:04 PM UTC, comment #1:

I can confirm the warning message and error return value for both "W" and "R". The warning message sounds like it's doing the right thing, but the file is not opened.

A mode of "A" should also be treated like "a" for compatibility.

Mike Miller <mtmiller>
Project Administrator
Mon 29 Apr 2013 03:18:49 PM UTC, original submission:

Following:
http://undocumentedmatlab.com/blog/improving-fwrite-performance/
I tried to use specifier 'W+' instead of 'w+' in my ( MATLAB) code for fopen.
In Octave, a warning is displayed but the returned file identifier is -1:

while it opens a file ok when using 'w+':

Guillaume <gyom>

 

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    Follow 6 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2013-04-29 jwe StatusIn Progress => Fixed
        Open/ClosedOpen => Closed
    2013-04-29 jwe StatusConfirmed => In Progress
        Assigned toNone => jwe
    2013-04-29 mtmiller CategoryNone => Interpreter
        StatusNone => Confirmed

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