[Koha-bugs] [Bug 4450] New: Type of error return causes problems

[bugzilla-daemon at kohaorg.ec2.liblime.com]

http://bugs.koha.org/cgi-bin/bugzilla3/show_bug.cgi?id=4450

           Summary: Type of error return causes problems
           Product: Koha
           Version: rel_3_2
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: Label printing
        AssignedTo: cnighswonger at foundations.edu
        ReportedBy: colin.campbell at ptfs-europe.com
   Estimated Hours: 0.0
 Change sponsored?: ---


Site reported this error:

"Can't use string ("-1") as an ARRAY ref while "strict refs" in use at
/home/koha/kohaclone/C4/Creators/Lib.pm line 538."

Cause was a db error which had been logged but the return which should have
been an array ref was a scalar (-1) Routines in C4/Creators are defaulting to
-1 returns in error conditions. It is safer and more robust to pass undef when
the calling code is expecting a reference or blessed reference to be returned,
or an empty array when an array is expected. 

Patch to follow


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