Add pg_add_size_overflow() and friends Commit 600086f47 added (several bespoke copies of) size_t addition with overflow checks to libpq. Move this to common/int.h, along with its subtraction and multiplication counterparts.
pg_neg_size_overflow() is intentionally omitted; I'm not sure we should add SSIZE_MAX to win32_port.h for the sake of a function with no callers. Back-patch of commit 8934f2136, done now because pg_add_size_overflow() and friends are needed more widely for security fixes. Author: Jacob Champion <[email protected]> Reviewed-by: Chao Li <[email protected]> Reviewed-by: Michael Paquier <[email protected]> Discussion: https://postgr.es/m/CAOYmi%2B%3D%2BpqUd2MUitvgW1pAJuXgG_TKCVc3_Ek7pe8z9nkf%2BAg%40mail.gmail.com Backpatch-through: 14-18 Security: CVE-2026-6473 Branch ------ REL_16_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/924b3e94390de04b0fbb55edce8a29873a5062e1 Author: Tom Lane <[email protected]> Modified Files -------------- src/include/common/int.h | 67 +++++++++++++++++++++++++++++++++++++ src/interfaces/libpq/fe-exec.c | 44 +++++++----------------- src/interfaces/libpq/fe-print.c | 36 +++++--------------- src/interfaces/libpq/fe-protocol3.c | 27 +++------------ 4 files changed, 91 insertions(+), 83 deletions(-)
