On Thu, May 12, 2016 at 02:43:02PM +0200, salvador fandino wrote: > The wrong constant name was being used. Thanks, applied as v5.25.2-8-g7674498. I followed it up with this: commit 00ac85b948033a963c2554006b5836e7ffb379c9 Author: David Mitchell <davem@iabyn.com> AuthorDate: Tue Jun 21 13:28:19 2016 +0100 PerlIO-encoding/t/fallback.t: test for warning The previous commit fixed a typo that had been present since this test script was created: WARN_ON_ERR misspelt as WARN_ON_ERROR. This means that one of the tests is now (correctly) issuing a warning. Rather than that spilling out onto STDERR, capture it and test it instead. M ext/PerlIO-encoding/t/fallback.t -- "Procrastination grows to fill the available time" -- Mitchell's corollary to Parkinson's Law