Re: Failed assertion with jit enabled

Hi,

On 2025-02-05 13:07:58 -0500, Tom Lane wrote:
> Bertrand Drouvot <bertranddrouvot.pg@gmail.com> writes:
> > I did look more closely (knowing that it works for you) and the issue is linked
> > to not using --with-llvm. Inded, I used to use --with-llvm but removed it some
> > time ago for testing.
> > So the failed build was not using --with-llvm and was relying on an old version
> > of llvmjit.so (build from the last time I used --with-llvm)...
> 
> Hmm ... I don't understand why a non-JIT build of the core would
> attempt to load llvmjit.so.  Seems like trouble waiting to happen,
> given how closely coupled the core and JIT are.  (The .bc files are
> pretty much guaranteed to be out of sync in such a case.)

To support a) packaging postgres with split-out JIT support b) pluggability of
JIT backends, the only way we detect if JIT is supported is by trying to load
the configured JIT backend (jit_provider GUC).

Greetings,

Andres Freund