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Prevent core dump in contrib version of autovacuum when a table has been

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dropped.  Per report from daveg (not his patch, though).
This commit is contained in:
Tom Lane 2005-10-20 16:14:47 +00:00
parent 52e98f8415
commit 01145f963f
1 changed files with 4 additions and 4 deletions
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8
contrib/pg_autovacuum/pg_autovacuum.c
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@ -142,7 +142,7 @@ init_table_info(PGresult *res, int row, db_info * dbi)
void
update_table_thresholds(db_info * dbi, tbl_info * tbl, int vacuum_type)
{
PGresult *res = NULL;
PGresult *res;
int disconnect = 0;
char query[128];
@ -156,7 +156,7 @@ update_table_thresholds(db_info * dbi, tbl_info * tbl, int vacuum_type)
{
snprintf(query, sizeof(query), PAGES_QUERY, tbl->relid);
res = send_query(query, dbi);
if (res != NULL)
if (res != NULL && PQntuples(res) > 0)
{
tbl->reltuples =
atof(PQgetvalue(res, 0, PQfnumber(res, "reltuples")));
@ -178,8 +178,6 @@ update_table_thresholds(db_info * dbi, tbl_info * tbl, int vacuum_type)
(args->analyze_base_threshold + args->analyze_scaling_factor * tbl->reltuples);
tbl->CountAtLastAnalyze = tbl->curr_analyze_count;
PQclear(res);
/*
* If the stats collector is reporting fewer updates then we
* have on record then the stats were probably reset, so we
@ -192,6 +190,8 @@ update_table_thresholds(db_info * dbi, tbl_info * tbl, int vacuum_type)
tbl->CountAtLastVacuum = tbl->curr_vacuum_count;
}
}
PQclear(res);
}
if (disconnect)
db_disconnect(dbi);