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-rw-r--r--src/backend/nodes/outfuncs.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c
index 95d6abb93e6..ec4d4b220cd 100644
--- a/src/backend/nodes/outfuncs.c
+++ b/src/backend/nodes/outfuncs.c
@@ -30,6 +30,7 @@
#include <ctype.h>
#include "lib/stringinfo.h"
+#include "miscadmin.h"
#include "nodes/extensible.h"
#include "nodes/plannodes.h"
#include "nodes/relation.h"
@@ -3615,6 +3616,9 @@ _outPartitionRangeDatum(StringInfo str, const PartitionRangeDatum *node)
void
outNode(StringInfo str, const void *obj)
{
+ /* Guard against stack overflow due to overly complex expressions */
+ check_stack_depth();
+
if (obj == NULL)
appendStringInfoString(str, "<>");
else if (IsA(obj, List) ||IsA(obj, IntList) || IsA(obj, OidList))