Bug report

bpo-38319/gh-16491 (PR#82500) tried to fix the use ofos.sendfile() for larger than 2 GiB files on 32-bit FreeBSD. But it only fixedsocket.sendfile() for the case whencount is false. Ifcount is not false,blocksize is calculated ascount - total_sent in the loop, and can cause an integer overflow ifcount is larger than 2 GiB.

Linked PRs

• gh-114077: Fix OverflowError in socket.sendfile() when pass count >2GiB #114079
• [3.12] gh-114077: Fix OverflowError in socket.sendfile() when pass count >2GiB (GH-114079) #114110
• [3.11] gh-114077: Fix OverflowError in socket.sendfile() when pass count >2GiB (GH-114079) #114111