"Nick Renders" <postgres@xxxxxxxxxx> writes: > We have set up a new test environment running PostgreSQL v12.2 on macOS > 10.14 and the issue is still there. Some nearby threads prompt these two questions: 1. Are you using your own build, or is this from EDB's installer? 2. If the latter, does turning JIT off ("set jit = off") make the problem go away? There is as yet no "native" support for --with-llvm on macOS, ie Apple themselves don't provide sufficient support for that. EDB seem to have hacked up something that sort of works, but only sort of. regards, tom lane