https://bugs.documentfoundation.org/show_bug.cgi?id=151503
Bug ID: 151503
Summary: logical operator semantics on missing (optional)
arguments has changed between 7.2 and 7.4
Product: LibreOffice
Version: 7.4.1.2 release
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: BASIC
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: lio...@mamane.lu
Description:
Consider the following code:
sub tst
tstOpt
end sub
sub tstOpt(optional foo as boolean)
if ismissing(foo) or foo then
msgbox "yes"
else
msgbox "no"
end if
end sub
In LibreOffice 7.2, calling sub tst (and thus calling tstOpt without its
optional argument) would print "yes". I'm not sure whether a missing parameter
was coerced to true by the "or" operator, or if the "or" operator was
evaluating its arguments lazily left to right, or both.
In LibreOffice 7.4, this gives an error "Argument is not Optional".
This breaks user code.
Compare with:
sub tstOpt2(optional foo as boolean)
if foo then
msgbox "yes"
else
msgbox "no"
end if
end sub
Which shows "yes" in both LibO 7.2 and LibO 7.4, showing that the if/then
construct does coerce a missing parameter to true.
The same happens with "and" and "not" operators.
Probably the logical operators and/not/or/... should continue to do the same
for backwards compatibility and coherence?
Steps to Reproduce:
run sub tst
Actual Results:
error "Argument is not Optional"
Expected Results:
messagebox showing "Yes"
Reproducible: Always
User Profile Reset: No
Additional Info:
Version: 7.4.1.2 / LibreOffice Community
Build ID: 3c58a8f3a960df8bc8fd77b461821e42c061c5f0
CPU threads: 8; OS: Linux 5.10; UI render: default; VCL: gtk3
Locale: fr-LU (fr_LU.UTF-8); UI: en-GB
Calc: threaded
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