Catch stack overflow when recursing in transformFromClauseItem(). Most parts of the parser can expect that the stack overflow check in transformExprRecurse() will trigger before things get desperate. However, transformFromClauseItem() can recurse directly to self without having analyzed any expressions, so it's possible to drive it to a stack-overrun crash. Add a check to prevent that.
Per bug #17583 from Egor Chindyaskin. Back-patch to all supported branches. Richard Guo Discussion: https://postgr.es/m/[email protected] Branch ------ REL_11_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/b744e13b021712d4aae3c239e8aedefc463c755f Modified Files -------------- src/backend/parser/parse_clause.c | 3 +++ 1 file changed, 3 insertions(+)
