Hi
PostgreSQL 18 will ship after these vacuum horizon systems reach EOL[1]:
animal | arch | llvm_version | os | os_release | end_of_support
---------------+---------+--------------+--------+------------+----------------
branta | s390x | 10.0.0 | Ubuntu | 20.04 | 2025-04-01
splitfin | aarch64 | 10.0.0 | Ubuntu | 20.04 | 2025-04-01
urutau | s390x | 10.0.0 | Ubuntu | 20.04 | 2025-04-01
massasauga | aarch64 | 11.1.0 | Amazon | 2 | 2025-06-30
snakefly | aarch64 | 11.1.0 | Amazon | 2 | 2025-06-30
Therefore, some time after the tree re-opens for hacking, we could rip
out a bunch of support code for LLVM 10-13, and then rip out support
for pre-opaque-pointer mode. Please see attached.
[1] https://www.postgresql.org/message-id/CA%2BhUKG%2B-g61yq7Ce4aoZtBDO98b4GXH8Cu3zxVk-Zn1Vh7TKpA%40mail.gmail.com