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Re: _EXTRA inheritance crashing IDL [message #30198 is a reply to message #30196]

Wed, 10 April 2002 19:05

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Rob Preece (Rob.Preece@msfc.nasa.gov) writes:

> OK, Rob de-lurking here.

Oh, good. :-)

> Has anyone seen a behavior where IDL 5.5 crashes on a call to a subroutine
> with an added _EXTRA keyword? I have found the same behavior on several
> different machines, Linux and Mac, which does not exist under 5.4. Here
> goes a test case:
>
> PRO test1, _REF_EXTRA = extra
>
> testStuff = ['TITLE','XTITLE','YTITLE']
>
> test2, INDGEN (10), _EXTRA = [testStuff, 'XRANGE']
>
> END
>
> PRO test2, plotStuff, _EXTRA = extra
>
> PLOT, plotStuff, plotStuff, _EXTRA = extra
>
> END
>
>
> Compile and execute :
>
> IDL> test1, XRANGE = [-1, 10]
>
> On 5.4, I get a nice plot, with my new XRANGE. On 5.5, I get a *totally
> irrelevant* error message:

Well, yes, it crashes IDL 5.5, but not IDL 5.4. But I
don't think you can hold RSI responsible for using their
keyword inheritance mechanism in such a bogus way.
Formatting the keywords you want to pass as a structure
(the way this was meant to work) is error free:

PRO test1, _REF_EXTRA = extra
testStuff = {TITLE:'bob',XTITLE:'jim',YTITLE:'mary'}
test2, INDGEN (10), _Extra=Create_Struct(testStuff, 'XRange',[0,5])
END

PRO test2, plotStuff, _EXTRA = extra
PLOT, plotStuff, plotStuff, _EXTRA = extra
END

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: _EXTRA inheritance crashing IDL By: David Fanning on Wed, 10 April 2002 21:42
		Re: _EXTRA inheritance crashing IDL By: Mark Hadfield on Wed, 10 April 2002 20:44
		Re: _EXTRA inheritance crashing IDL By: David Fanning on Wed, 10 April 2002 19:05
		Re: _EXTRA inheritance crashing IDL By: Mark Hadfield on Wed, 10 April 2002 15:41
		Re: _EXTRA inheritance crashing IDL By: Rob.Preece on Thu, 11 April 2002 13:21

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