stairs(1:3) bug

[Jakub Kasse]

Bug report for Octave 3.2.3 configured for i686-pc-mingw32

Description:
-----------

Try:

stairs(1:3)

And you get errors in plot.m in function __stairs__ on line 83:

  if (nargin == 1 || ischar (varargin{2}))

And also some other error, probably as a consequence.


Repeat-By:
---------

As I wrote, try "stairs(1:3)"

Fix:
---

Instead of "nargin==1" replace by "nargin==2" on line 83. The source
of the mistake is probably in the definition of function __stairs__:

function [h, xs, ys] = __stairs__ (doplot, varargin)

When it is called from line 70:

        [h, xxs, yys] = __stairs__ (true, varargin{:});

Then the "nargin" is always greater or equal 2 because of "doplot" and
at least one parameter in "varargin". In case of "stairs(1:3)" the
"nargin" on line 83 is 2, "varargin" is "1:3" and "varargin(2)"
doesn't exist.

I'm not on your mailing list. Please confirm this email.

Bye,
Jakub

Configuration (please do not edit this section):
-----------------------------------------------

uname output:     Windows
configure opts:  
Fortran compiler: mingw32-gfortran-4.4.0-dw2
FFLAGS:           -O -mieee-fp
FLIBS:            -lgfortran
CPPFLAGS:        
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C compiler:       mingw32-gcc-4.4.0-dw2, version4.4.0 (GCC)
CFLAGS:           -march=i686 -mtune=generic -O3 -Wall
CPICFLAG:        
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CXXPICFLAG:      
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User-preferences (please do not edit this section):

  EDITOR = C:\Octave\3.2.3_gcc4.4.0\tools\notepad++\notepad++.exe
  EXEC_PATH = C:\Octave\3.2.3_gcc4.4.0\MINGW32\bin;C:\Octave\3.2.3_gcc4.4.0\MSYS\bin;C:\Octave\3.2.3_gcc4.4.0\libexec\octave\3.2.3\site\exec\i686-pc-mingw32;C:\Octave\3.2.3_gcc4.4.0\libexec\octave\api-v37\site\exec\i686-pc-mingw32;C:\Octave\3.2.3_gcc4.4.0\libexec\octave\site\exec\i686-pc-mingw32;C:\Octave\3.2.3_gcc4.4.0\libexec\octave\3.2.3\exec\i686-pc-mingw32;C:\Octave\3.2.3_gcc4.4.0\bin;C:\Program Files\PC Connectivity Solution\;C:\Program Files\Siemens\Common\bin;C:\Program Files\Siemens\STEP7\s7bin;C:\Program Files\RSA SecurID Token Common;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\WBEM;c:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\Program Files\Siemens\DESIGO\Insight 3.0\Citect\Bin\;c:\Program Files\Microsoft SQL Server\80\Tools\Binn\;C:\LonWorks\bin;C:\Program Files\Common Files\Autodesk Shared\;C:\Program Files\OpenVPN\bin;C:\LONWORKS\BIN
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[John W. Eaton-3]

On 11-Nov-2009, Jakub Kasse wrote:

| Bug report for Octave 3.2.3 configured for i686-pc-mingw32
|
| Description:
| -----------
|
| Try:
|
| stairs(1:3)
|
| And you get errors in plot.m in function __stairs__ on line 83:
|
|   if (nargin == 1 || ischar (varargin{2}))
|
| And also some other error, probably as a consequence.
|
|
| Repeat-By:
| ---------
|
| As I wrote, try "stairs(1:3)"
|
| Fix:
| ---
|
| Instead of "nargin==1" replace by "nargin==2" on line 83. The source
| of the mistake is probably in the definition of function __stairs__:
|
| function [h, xs, ys] = __stairs__ (doplot, varargin)
|
| When it is called from line 70:
|
|         [h, xxs, yys] = __stairs__ (true, varargin{:});
|
| Then the "nargin" is always greater or equal 2 because of "doplot" and
| at least one parameter in "varargin". In case of "stairs(1:3)" the
| "nargin" on line 83 is 2, "varargin" is "1:3" and "varargin(2)"
| doesn't exist.

I checked in the following change.

  http://hg.savannah.gnu.org/hgweb/octave/rev/965487e00282

Jaroslav, this could probably be applied to the 3.2.x branch.

Thanks,

jwe
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[Jaroslav Hajek-2]

On Wed, Nov 11, 2009 at 11:52 PM, John W. Eaton <jwe@...> wrote:

On 11-Nov-2009, Jakub Kasse wrote:

| Bug report for Octave 3.2.3 configured for i686-pc-mingw32
|
| Description:
| -----------
|
| Try:
|
| stairs(1:3)
|
| And you get errors in plot.m in function __stairs__ on line 83:
|
|   if (nargin == 1 || ischar (varargin{2}))
|
| And also some other error, probably as a consequence.
|
|
| Repeat-By:
| ---------
|
| As I wrote, try "stairs(1:3)"
|
| Fix:
| ---
|
| Instead of "nargin==1" replace by "nargin==2" on line 83. The source
| of the mistake is probably in the definition of function __stairs__:
|
| function [h, xs, ys] = __stairs__ (doplot, varargin)
|
| When it is called from line 70:
|
|         [h, xxs, yys] = __stairs__ (true, varargin{:});
|
| Then the "nargin" is always greater or equal 2 because of "doplot" and
| at least one parameter in "varargin". In case of "stairs(1:3)" the
| "nargin" on line 83 is 2, "varargin" is "1:3" and "varargin(2)"
| doesn't exist.

I checked in the following change.

 http://hg.savannah.gnu.org/hgweb/octave/rev/965487e00282

Jaroslav, this could probably be applied to the 3.2.x branch.

Thanks,

Done.

--
RNDr. Jaroslav Hajek
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz

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