Bug#855064: perl: encode+substr leaks memory

[Niko Tyni]

Package: perl
Version: 5.24.1-1
Severity: important
Tags: upstream
Forwarded: https://rt.perl.org/Ticket/Display.html?id=130766

As reported in [perl #130766], a regression in Perl 5.24
made some combinations of Encode::encode and substr leak
memory.

For instance, running

 perl -e 'use Encode; while (1) { encode("ascii", substr("test",1)); }'

makes the perl process grow without bounds.

We should probably fix this for stretch.
-- 
Niko Tyni   ntyni at debian.org