retitle 1012704 libmath-bigint-perl: busy loop with bignum bitwise operations severity 1012704 serious reassign 1012704 libmath-bigint-perl 1.999835-1 found 1012704 1.999837-1 tag 1012704 upstream thanks
On Sun, Sep 18, 2022 at 12:14:06PM +0100, Klaus Ethgen wrote: > I was able to fix that bug by taking Math::BigInt and Math::BigFloat > from perl 5.36. They work seamless. > > I will reassign the bug to perl-modules. Thanks for the report. This boils down to % perl -Mbignum -e '1 | (1 >> 1)' Deep recursion on subroutine "Math::BigInt::bior" at /usr/share/perl5/Math/BigFloat.pm line 3883. Deep recursion on subroutine "Math::BigFloat::bior" at /usr/share/perl5/Math/BigInt.pm line 3513. Also happens with other bitwise operations like & and ^ . The bug is not specific to any Perl versions but seems to be fully contained in Math::BigInt / Math::BigFloat. The versions of those modules that ship with Perl 5.34.0 (Math::BigInt 1.999818) and Perl 5.36.0 (Math::BigInt 1.999830) are not affected by the bug, but you have the newer separate libmath-bigint-perl package installed where the bug triggers. It seems to have regressed upstream around 1.999832 (where it started to spit errors) and 1.999834 (where the errors became infinite recursion.) The first version in Debian that had the bug was 1.999835-1, which fits your upgrade timeline. So I'm reassigning this once more. Also raising the severity as this looks rather Bad. Would be great if (other) pkg-perl maintainers can pick this up from here and forward upstream etc. Otherwise I'll get to it eventually :) -- Niko Tyni nt...@debian.org