mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2024-12-21 08:29:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

Clean up foreign-key caching code in planner.

Browse Source 
Coverity complained that the code added by 015e88942a lacked an
error check for SearchSysCache1 failures, which it should have.  But
the code was pretty duff in other ways too, including failure to think
about whether it could really cope with arrays of different lengths.
This commit is contained in:
Tom Lane 2016-04-10 23:47:30 -04:00
parent 7e3bb08038
commit 5306df2831
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/backend/optimizer/util/plancat.c
View File

@ -408,17 +408,20 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
foreach(l, fkoidlist)
{
int i;
ArrayType *arr;
Oid fkoid = lfirst_oid(l);
HeapTuple htup;
Form_pg_constraint constraint;
ForeignKeyOptInfo *info;
Datum adatum;
bool isnull;
ArrayType *arr;
int numkeys;
Oid fkoid = lfirst_oid(l);
int i;
HeapTuple htup = SearchSysCache1(CONSTROID, ObjectIdGetDatum(fkoid));
Form_pg_constraint constraint = (Form_pg_constraint) GETSTRUCT(htup);
ForeignKeyOptInfo *info;
htup = SearchSysCache1(CONSTROID, ObjectIdGetDatum(fkoid));
if (!HeapTupleIsValid(htup)) /* should not happen */
elog(ERROR, "cache lookup failed for constraint %u", fkoid);
constraint = (Form_pg_constraint) GETSTRUCT(htup);
Assert(constraint->contype == CONSTRAINT_FOREIGN);
@ -434,8 +437,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
arr = DatumGetArrayTypeP(adatum);
numkeys = ARR_DIMS(arr)[0];
info->conkeys = (int*)palloc0(numkeys * sizeof(int));
info->conkeys = (int*)palloc(numkeys * sizeof(int));
for (i = 0; i < numkeys; i++)
info->conkeys[i] = ((int16 *) ARR_DATA_PTR(arr))[i];
@ -445,9 +447,8 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
Assert(!isnull);
arr = DatumGetArrayTypeP(adatum);
numkeys = ARR_DIMS(arr)[0];
info->confkeys = (int*)palloc0(numkeys * sizeof(int));
Assert(numkeys == ARR_DIMS(arr)[0]);
info->confkeys = (int*)palloc(numkeys * sizeof(int));
for (i = 0; i < numkeys; i++)
info->confkeys[i] = ((int16 *) ARR_DATA_PTR(arr))[i];
@ -457,9 +458,8 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
Assert(!isnull);
arr = DatumGetArrayTypeP(adatum);
numkeys = ARR_DIMS(arr)[0];
info->conpfeqop = (Oid*)palloc0(numkeys * sizeof(Oid));
Assert(numkeys == ARR_DIMS(arr)[0]);
info->conpfeqop = (Oid*)palloc(numkeys * sizeof(Oid));
for (i = 0; i < numkeys; i++)
info->conpfeqop[i] = ((Oid *) ARR_DATA_PTR(arr))[i];
@ -467,7 +467,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
ReleaseSysCache(htup);
fkinfos = lcons(info, fkinfos);
fkinfos = lappend(fkinfos, info);
}
list_free(fkoidlist);