Recently, I saw proponents of automated tools show a bug found in the timsort hybrid sorting algorithm.
It's been widely used, and ported, so this is with some pride that proponents of a particular approach gloat, with cause.
But several things stand out. The solution is what SEI would have named "low maturity" (not quite - the article did go through it elsewhere):
- it copy / paste's what was and what is, leaving it to the reader to discover what changes were made;