Re: Andres Freund 2018-07-21 <20180721202543.ri5jyfclj6kb6lag@alap3.anarazel.de>
> Could you attempt to come up with a smaller reproducer?
The original instructions in
https://trac.osgeo.org/postgis/ticket/4125 are fairly easy to follow;
there's also a postgresql-11-postgis-2.5{,-scripts} package (not
mentioned in there) that exhibits the bug.
(Add "stretch-pgdg-testing main 11" to sources.list.)
That said, I'm just rebuilding postgresql-11 on stretch to use
llvm-4.0 instead of 3.9.
Christoph