On Tue, Dec 22, 2015 at 07:48:11AM +0100, Johannes Schauer wrote: > Quoting Niko Tyni (2015-12-21 23:43:24) > > My preliminary findings are that a change in Perl broke the sbuild parsing > > of > > .changes files, in lib/Sbuild/Build.pm:1865 or so. > > > > This has different behaviour on 5.20 and 5.22: > > > > perl -MData::Dumper -e '@a=(split( /\s+/, "foo"))[5]; print Dumper \@a' > > > > which shows an empty array on 5.20 and an array of one undef element > > on 5.22. > > > > I'm not yet sure if this is a regression in Perl or a bugfix. > > Will follow up later when I know more. Marking this as blocking the Perl > > transition to testing for now.
FWIW it turns out it's a bugfix not a regression in Perl. The relevant perl5220delta entry is List slices now return an empty list only if the original list was empty (or if there are no indices). Formerly, a list slice would return an empty list if all indices fell outside the original list; now it returns a list of undef values in that case. [perl #114498]. and the gory details are at https://rt.perl.org/Public/Bug/Display.html?id=114498 > > If the problem is this change of behaviour as you described it, then the fix > is > a very simple one: Cool, thanks! I'm not sure if there are other problems, this was the one I found first. -- Niko Tyni nt...@debian.org
