Hi,
I already filed a report here:
https://bugzilla.scilab.org/show_bug.cgi?id=16556
Do you want a more compact example than that?
Here is an even more slimmed version.
Cheers,
Arvid
----------
// Define variables
testArray = list(list([]));
testArray(1)(1).testMember = 1;
testArrayOrig = testArray;
// Define function
function outArray = testFunc(inArray)
inArray(1)(1).testMember = 5
outArray = inArray;
endfunction
// Send the variable as argument to the function
testArrayOut = testFunc(testArray);
if testArrayOut(1)(1).testMember == testArray(1)(1).testMember
error("Error! inputArgument was changed by function");
end
--
From: Scilab Users List <[email protected]> on behalf of Stéphane
Mottelet <[email protected]>
Reply to: Users mailing list for Scilab <[email protected]>
Date: Friday, 16 October 2020 at 13:40
To: "[email protected]" <[email protected]>
Subject: Re: [Scilab-users] Scilab 6 - Problem with scope and nested lists
Hello,
I think that this is a sufficiently serious issue to diserve a report in
bugzilla.scilab.org. But could you prepare a more compact example ?
S.
Le 16/10/2020 à 13:35, Arvid Rosén a écrit :
Hi!
We have found a tricky issue when moving over from Scilab 5 to Scilab 6 in my
organization. We have a lot of code which works with nested lists, and
functions modifying those lists. However, when a function is called with some
nested lists as an input argument, the body of that function can change the
value of the variable in the calling scope. This was not the case in Scilab 5,
and the issue is super tricky to hunt down in our quite extensive code base.
Below is a short example of the problem, and how to reproduce it.
I have also filed a bug report here:
https://bugzilla.scilab.org/show_bug.cgi?id=16556
Is anyone else seeing this problem? And do you have any workarounds or other
suggestions?
Cheers,
Arvid
------
// Define variables
testArray = list();
for i=1:1:10
testArray($+1) = list();
for j=1:1:10
testArray(i)($+1) = [];
testArray(i)(j).testMember = 1;
end
end
testArrayOrig = testArray;
// Define functions
function outArray = testFunc(inArray)
for i=1:1:10
for j=1:1:10
inArray(i)(j).testMember = 5
end
end
outArray = inArray;
endfunction
// Send the variable as argument to the function
if %t
testArrayOut = testFunc2(testArray);
if testArrayOut(1)(1).testMember == testArray(1)(1).testMember
error("Error! inputArgument was changed by function");
end
end
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--
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
http://www.utc.fr/~mottelet
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