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da9f9f75e5
It's possible that if the only live partition is concurrently dropped and try_table_open() fails, that the bms_del_member() will pfree the live_parts Bitmapset. Since the bms_del_member() call does not assign the result back to the live_parts local variable, the while loop could segfault as that variable would still reference the pfree'd Bitmapset. Backpatch to 15.52f3de874was backpatched to 14, but there's no bms_del_member() there due to live_parts not yet existing in RelOptInfo in that version. Technically there's no bug in version 15 as bms_del_member() didn't pfree when the set became empty prior to00b41463c(from v16). Applied to v15 anyway to keep the code similar and to avoid the bad coding pattern. Author: Bernd Reiß <bd_reiss@gmx.at> Reviewed-by: David Rowley <dgrowleyml@gmail.com> Discussion: https://postgr.es/m/6b88f27a-c45c-4826-8e37-d61a04d90182@gmx.at Backpatch-through: 15