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Fix memory arrangement of tsquery after removing stop words. It causes

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a unused memory holes in tsquery.

Per report by Richard Huxton <dev@archonet.com>.

It was working well because in fact tsquery->size is not used for any
kind of operation except comparing tsqueries. So, in HEAD it's enough to
fix to_tsquery function, but for previous version it's needed to
remove optimization in CompareTSQ to prevent requirement of renew all
stored tsquery.
This commit is contained in:
Teodor Sigaev 2008-03-07 14:30:20 +00:00
parent 588d213a92
commit 3b8bca335d
1 changed files with 25 additions and 1 deletions
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26
src/backend/tsearch/to_tsany.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tsearch/to_tsany.c,v 1.9 2008/03/05 15:50:37 momjian Exp $
* $PostgreSQL: pgsql/src/backend/tsearch/to_tsany.c,v 1.10 2008/03/07 14:30:20 teodor Exp $
*
*-------------------------------------------------------------------------
*/
@ -350,6 +350,18 @@ to_tsquery_byid(PG_FUNCTION_ARGS)
PG_RETURN_POINTER(query);
}
memcpy((void *) GETQUERY(query), (void *) res, len * sizeof(QueryItem));
if ( len != query->size ) {
char *oldoperand = GETOPERAND(query);
int4 lenoperand = VARSIZE(query) - (oldoperand - (char*)query);
Assert( len < query->size );
query->size = len;
memcpy((void *) GETOPERAND(query), oldoperand, VARSIZE(query) - (oldoperand - (char*)query) );
SET_VARSIZE(query, COMPUTESIZE( len, lenoperand ));
}
pfree(res);
PG_RETURN_TSQUERY(query);
}
@ -388,6 +400,18 @@ plainto_tsquery_byid(PG_FUNCTION_ARGS)
PG_RETURN_POINTER(query);
}
memcpy((void *) GETQUERY(query), (void *) res, len * sizeof(QueryItem));
if ( len != query->size ) {
char *oldoperand = GETOPERAND(query);
int4 lenoperand = VARSIZE(query) - (oldoperand - (char*)query);
Assert( len < query->size );
query->size = len;
memcpy((void *) GETOPERAND(query), oldoperand, lenoperand );
SET_VARSIZE(query, COMPUTESIZE( len, lenoperand ));
}
pfree(res);
PG_RETURN_POINTER(query);
}