Issue #5987 has been updated by Yui NARUSE. Status changed from Open to Assigned Assignee set to Akinori MUSHA ---------------------------------------- Feature #5987: IPAddr#initialize should display the invalid address when raising ArgumentError https://bugs.ruby-lang.org/issues/5987 Author: Hal Brodigan Status: Assigned Priority: Normal Assignee: Akinori MUSHA Category: core Target version: I noticed that when IPAddr#initialize raises an ArgumentError on invalid addresses, it does not include the offending address in the exception message. This makes debugging difficult. -- http://bugs.ruby-lang.org/