Postgresql 9.5+ may now fail to compile if NAMEDATELEN has been set absurdly large (In my case, 384).
The file src/backend/utils/adt/levenshtein.c does a static assert on "NAMEDATALEN <= MAX_LEVENSHTEIN_STRLEN" with MAX_LEVENSHTEIN_STRLEN currently set to 255. When using a gcc version that does not support static asserts, the error message looks like: - "levenshtein.c:104: error: negative width in bit-field 'static_assert_failure'" It would be great to be mention this new upper limit on NAMEDATALEN in the documentation. Here are some places I've looked at: - src/include/pg_config_manual.h - http://www.postgresql.org/docs/9.5/static/sql-syntax-lexical.html - http://www.postgresql.org/docs/9.5/static/runtime-config-preset.html - https://wiki.postgresql.org/wiki/Todo While on the subject of NAMEDATALEN, there is a second undocumented place where NAMEDATALEN is defined: - src/interfaces/ecpg/include/sqlda-native.h -- Kevin Day
