Re: ubsan

Andres Freund <andres@anarazel.de> writes:
> I tried to run postgres with ubsan to debug something.

For 0001, could we just replace configure's dlopen check with the
dlsym check?  Or are you afraid of reverse-case failures?

0002: ugh, but my only real complaint is that __ubsan_default_options
needs more than zero comment.  Also, it's not "our" getenv is it?

0003: OK.  Interesting though that we haven't seen these before.

0004: no opinion

            regards, tom lane