diff options
Diffstat (limited to 'src/backend/optimizer/plan/setrefs.c')
| -rw-r--r-- | src/backend/optimizer/plan/setrefs.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/optimizer/plan/setrefs.c b/src/backend/optimizer/plan/setrefs.c index 78d76960f80..e3bfc87586a 100644 --- a/src/backend/optimizer/plan/setrefs.c +++ b/src/backend/optimizer/plan/setrefs.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.39 1999/02/13 23:16:33 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.40 1999/02/15 01:06:58 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -290,6 +290,8 @@ replace_clause_joinvar_refs(Expr *clause, { List *temp = NULL; + if (clause == NULL) + return NULL; if (IsA(clause, Var)) { temp = (List *) replace_joinvar_refs((Var *) clause, @@ -586,6 +588,8 @@ replace_result_clause(Node *clause, { List *t; + if (clause == NULL) + return; if (IsA(clause, Var)) { TargetEntry *subplanVar; |