Bug 57308

Summary:	Basic IDE: watching of variable not working if variable is returning value of function
Product:	LibreOffice	Reporter:	sasha.libreoffice
Component:	BASIC	Assignee:	Not Assigned <libreoffice-bugs>
Status:	NEW ---	QA Contact:
Severity:	minor
Priority:	medium	CC:	lemoyne.castle
Version:	3.4.2 release
Hardware:	All
OS:	All
See Also:	https://bugs.freedesktop.org/show_bug.cgi?id=57307
Whiteboard:
i915 platform:		i915 features:

Description sasha.libreoffice 2012-11-20 08:37:24 UTC

Basic IDE problem: If we place variable which returns value from function to Watch window, it not working. Always tells "Out of scope"

Steps to reproduce:
0. Start any LO module, for example, Writer
1. Press Alt-F11, in dialog "LibreOffice Basic Macros" press "New" and then "Ok"
2. In Basic IDE enter something like this:

Sub Main
c=MySum(1,2)
End Sub
Function MySum (a as Integer, b as Integer)
MySum=0
MySum=a+MySum
MySum=MySum*10
MySum=b+MySum
End Function

3. Place cursor on word MySum and press F7. This variable added to Watch window
4. Place cursor on line where is MySum=0 and press F9. BreakPoint added
5. Place cursor on line where Sub Main and press F5
6. Press F8 several times and see on Watch window
Expected: value of variable MySum is shown
Actually: always "Out of scope"

reproduced in 3.4.2 on Windows XP 32 bit and in 3.6.3 on RFR 17 64 bit

Workaround: create new variable and use it for all calculations, then assign result to returning variable in last line of function

Comment 1 LeMoyne Castle 2012-12-22 05:36:28 UTC

Confirmed with 12/20 build of dev master.  Always <Out of scope>.  The lexical scope of  the function name is file/module scope.  IIRC, some time ago, Noel Power told me that some module scope objects have this issue.  Moved to NEW.

Tested global vars (working) and const items (don't work) with the following: 

global SomeTweak as integer  
const TweakToo = 2

Sub Main
    SomeTweak = 1 
    c=MySum(1,2)
    MsgBox c 
End Sub

public Function MySum (a as Integer, b as Integer)
   MySum=SomeTweak+TweakToo
   MySum=a+MySum
   MySum=MySum*10
   MySum=b+MySum
End Function

I know watching a const isn't very useful but there may be even more BASIC constructs that have this issue of falsely reporting <out of scope> in the Watch Window.

Comment 2 LeMoyne Castle 2013-01-04 17:03:50 UTC

More generally, want to be able to watch expressions that include functions, in scope vars and values from the object model.  For example the following should show true, false, <type error>?, in addition to <out of scope> where appropriate: oSheet.Cells(r,c).value = 3 . 

Will look at this while working on 57307.

Comment 3 QA Administrators 2015-01-05 17:52:32 UTC

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