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Add stack depth checks to key recursive functions in backend/nodes/*.c.

Although copyfuncs.c has a check_stack_depth call in its recursion,
equalfuncs.c, outfuncs.c, and readfuncs.c lacked one.  This seems
unwise.

Likewise fix planstate_tree_walker(), in branches where that exists.

Discussion: https://postgr.es/m/30253.1544286631@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2018-12-10 11:12:43 -05:00
parent e28649a67f
commit 001bb9f3ed
4 changed files with 15 additions and 0 deletions

View File

@ -33,6 +33,7 @@
#include <math.h>
#include "fmgr.h"
#include "miscadmin.h"
#include "nodes/extensible.h"
#include "nodes/parsenodes.h"
#include "nodes/plannodes.h"
@ -2549,6 +2550,9 @@ parseNodeString(void)
READ_TEMP_LOCALS();
/* Guard against stack overflow due to overly complex expressions */
check_stack_depth();
token = pg_strtok(&length);
#define MATCH(tokname, namelen) \