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author | Tom Lane <tgl@sss.pgh.pa.us> | 2018-12-10 11:12:43 -0500 |
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committer | Tom Lane <tgl@sss.pgh.pa.us> | 2018-12-10 11:12:43 -0500 |
commit | 552c310ba4ec072a2df48a08722f0af2e3703fdf (patch) | |
tree | a3dea17fe8d91570e5b1639f90202af51d1a5cc1 /src/backend/nodes/readfuncs.c | |
parent | 4d5cfb91156d1cc8ede245b8b363468efedf1975 (diff) | |
download | postgresql-552c310ba4ec072a2df48a08722f0af2e3703fdf.tar.gz postgresql-552c310ba4ec072a2df48a08722f0af2e3703fdf.zip |
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
Diffstat (limited to 'src/backend/nodes/readfuncs.c')
-rw-r--r-- | src/backend/nodes/readfuncs.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c index 32b23fff097..a285af302f8 100644 --- a/src/backend/nodes/readfuncs.c +++ b/src/backend/nodes/readfuncs.c @@ -28,6 +28,7 @@ #include <math.h> +#include "miscadmin.h" #include "nodes/parsenodes.h" #include "nodes/readfuncs.h" @@ -1382,6 +1383,9 @@ 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) \ |