I found a bug deep in the Erlang internals that apparently came about due to a missed case in an optimization that the team put in. It was not terribly hard to

I found a bug deep in the Erlang internals that apparently came about due to a missed case in an optimization that the team put in. It was not terribly hard to find though, on account that it was tripped by a unit test that was working just fine on an earlier version of BEAM, and thus was also easy to reduce to a minimal case by A/Bing against both versions.