Issue #8503 has been reported by charliesome (Charlie Somerville). ---------------------------------------- Backport #8503: Backport r41175 https://bugs.ruby-lang.org/issues/8503 Author: charliesome (Charlie Somerville) Status: Open Priority: Normal Assignee: usa (Usaku NAKAMURA) Category: Target version: r41175 fixes Module#include failing to increment ruby_vm_global_state_version when a module without any methods was included into a class. This can cause constant lookups to be incorrectly cached. -- http://bugs.ruby-lang.org/