REGISTER_LONG_CONSTANT("PGSQL_BAD_RESPONSE", PGRES_BAD_RESPONSE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_NONFATAL_ERROR", PGRES_NONFATAL_ERROR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_FATAL_ERROR", PGRES_FATAL_ERROR, CONST_CS | CONST_PERSISTENT);
+#if HAVE_PQRESULTERRORFIELD
/* For pg_result_error_field() field codes */
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SEVERITY", PG_DIAG_SEVERITY, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SQLSTATE", PG_DIAG_SQLSTATE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_FILE", PG_DIAG_SOURCE_FILE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_LINE", PG_DIAG_SOURCE_LINE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_FUNCTION", PG_DIAG_SOURCE_FUNCTION, CONST_CS | CONST_PERSISTENT);
+#endif
/* pg_convert options */
REGISTER_LONG_CONSTANT("PGSQL_CONV_IGNORE_DEFAULT", PGSQL_CONV_IGNORE_DEFAULT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_CONV_FORCE_NULL", PGSQL_CONV_FORCE_NULL, CONST_CS | CONST_PERSISTENT);