The ruby parser gem is an implementation of a Ruby parser in Ruby itself, which allows for Ruby code to parse and introspect Ruby code. It’s used in a number of places, but perhaps most prominently by rubocop, a Ruby linter and style checker. In parser versions <= 2.3.0.4, the parser is quadratic in the length of the input string, for any input containing >0 unicode codepoints outside of the ASCII range. The problem arises initially in the lexer, which turns the source input into a sequence...| Accidentally Quadratic
DBD::mysql has long provided the interface to connect to the MySQL database from Perl code. But as old as it is, it was implemented with some critical bugs that cannot simply be corrected without breaking mountains of existing code relying on those bugs. For this same reason, though DBD::MariaDB corrects these bugs, care must be taken when migrating existing code to avoid subtle breakage.| blogs.perl.org