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_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/bfda7d8dd6b392c5d55bfb032aa7848b20227e12 Modified Files -------------- src/backend/access/brin/brin.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
