diff options
Diffstat (limited to 'src/backend/optimizer/prep/prepunion.c')
| -rw-r--r-- | src/backend/optimizer/prep/prepunion.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c index 0c2bb5d51f3..c54e3251dcc 100644 --- a/src/backend/optimizer/prep/prepunion.c +++ b/src/backend/optimizer/prep/prepunion.c @@ -220,6 +220,9 @@ recurse_set_operations(Node *setOp, PlannerInfo *root, int flag, List *refnames_tlist, List **sortClauses, double *pNumGroups) { + /* Guard against stack overflow due to overly complex setop nests */ + check_stack_depth(); + if (IsA(setOp, RangeTblRef)) { RangeTblRef *rtr = (RangeTblRef *) setOp; |