Fix potential integer overflow in bringetbitmap() This function expects an "int64" as result and stores the number of pages to add to the index scan bitmap as an "int", multiplying its final result by 10. For a relation large enough, this can theoretically overflow if counting more than (INT32_MAX / 10) pages, knowing that the number of pages is upper-bounded by MaxBlockNumber.
To avoid the overflow, this commit redefines "totalpages", used to calculate the result, to be an "int64" rather than an "int". Reported-by: Evgeniy Gorbanyov Author: James Hunter Discussion: https://www.postgresql.org/message-id/07704817-6fa0-460c-b1cf-cd18f7647...@basealt.ru Backpatch-through: 13 Branch ------ REL_14_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/e35ff652056998e48c01c9e49c1a1b5ad6808f0a Modified Files -------------- src/backend/access/brin/brin.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
