On Mon, Oct 16, 2017, at 20:43, Olly Betts wrote: > So it looks to me like you're running tests using libxapian from a > previous build somehow Many thanks for the sleuthing, Olly! That was indeed the issue and my PR now cleanly passed local unit tests. I just submitted https://github.com/xapian/xapian/pull/180 Cheers, Robert