A dubious message related to SP-GiST compress method.

I ran across the followin gcode in spgutils.c.

> if (OidIsValid(cache->config.leafType) &&
> cache->config.leafType != atttype)
> {
> if (!OidIsValid(index_getprocid(index, 1, SPGIST_COMPRESS_PROC)))
> ereport(ERROR,
> (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
> errmsg("compress method must not defined when leaf type is different from input type")));
> fillTypeDesc(&cache->attLeafType, cache->config.leafType);

IIUC the fourth line looks inconsistent with the message in 7th
line. Compress methos is required in the case. Isn't "must not
defined" a typo of "must be defined"?

regards.

--
Kyotaro Horiguchi
NTT Open Source Software Center