Adrian Klaver <adrian.klaver@aklaver.com> writes:
> My suspicion is that when you did the source build you got some cross
> contamination of libraries.
That's the best theory I can come up with either, although libpq's
APIs haven't really changed in any non-backwards-compatible fashion
in years. I could imagine a newer psql flat-out crashing because it
tries to call some libpq function that doesn't exist in an older
libpq, but that's not what we're seeing here. It's really weird.
A couple of tests that might help narrow things down:
1. In the server configuration, enable log_connections,
log_disconnections, and log_statement = 'all'. Does anything show up in
the log when you connect with the broken psql and issue commands?
2. If you issue commands that span multiple lines --- unclosed left
parens, multiline string literals, missing semicolons --- does the
psql prompt change to match?
regards, tom lane
