I was adding gcc printf attributes to more functions in obscure places, and now I'm seeing this in pg_upgrade:
relfilenode.c:72:2: warning: zero-length gnu_printf format string [-Wformat-zero-length] So the options I can see are either adding the compiler option -Wno-format-zero-length (with configure check and all), or hack up the code to do something like this instead: Before: prep_status(""); After: prep_status("%s", ""); Comments? -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers