diff --git a/src/backend/utils/adt/ri_triggers.c b/src/backend/utils/adt/ri_triggers.c
index 52bb2f2fee9..2de08da6539 100644
--- a/src/backend/utils/adt/ri_triggers.c
+++ b/src/backend/utils/adt/ri_triggers.c
@@ -150,7 +150,8 @@ typedef struct RI_CompareHashEntry RI_CompareHashEntry;
 /* Fast-path metadata for RI checks on foreign key referencing tables */
 typedef struct FastPathMeta
 {
-	RI_CompareHashEntry *compare_entries[RI_MAX_NUMKEYS];
+	FmgrInfo	eq_opr_finfo[RI_MAX_NUMKEYS];
+	FmgrInfo	cast_func_finfo[RI_MAX_NUMKEYS];
 	RegProcedure regops[RI_MAX_NUMKEYS];
 	Oid			subtypes[RI_MAX_NUMKEYS];
 	int			strats[RI_MAX_NUMKEYS];
@@ -2996,16 +2997,12 @@ build_index_scankeys(const RI_ConstraintInfo *riinfo,
 	 */
 	for (int i = 0; i < riinfo->nkeys; i++)
 	{
-		if (pk_nulls[i] != 'n')
-		{
-			RI_CompareHashEntry *entry = fpmeta->compare_entries[i];
-
-			if (OidIsValid(entry->cast_func_finfo.fn_oid))
-				pk_vals[i] = FunctionCall3(&entry->cast_func_finfo,
-										   pk_vals[i],
-										   Int32GetDatum(-1),	/* typmod */
-										   BoolGetDatum(false));	/* implicit coercion */
-		}
+		if (pk_nulls[i] != 'n' &&
+			OidIsValid(fpmeta->cast_func_finfo[i].fn_oid))
+			pk_vals[i] = FunctionCall3(&fpmeta->cast_func_finfo[i],
+									   pk_vals[i],
+									   Int32GetDatum(-1),	/* typmod */
+									   BoolGetDatum(false));	/* implicit coercion */
 	}
 
 	/*
@@ -3048,7 +3045,10 @@ ri_populate_fastpath_metadata(RI_ConstraintInfo *riinfo,
 		Oid			lefttype;
 		RI_CompareHashEntry *entry = ri_HashCompareOp(eq_opr, typeid);
 
-		fpmeta->compare_entries[i] = entry;
+		fmgr_info_copy(&fpmeta->cast_func_finfo[i], &entry->cast_func_finfo,
+					   CurrentMemoryContext);
+		fmgr_info_copy(&fpmeta->eq_opr_finfo[i], &entry->eq_opr_finfo,
+					   CurrentMemoryContext);
 		fpmeta->regops[i] = get_opcode(eq_opr);
 
 		get_op_opfamily_properties(eq_opr,