Hi, This fixes the union initialization regression introduced by GCC 15, and improves explicit padding initialization for structs. I can take this via the hardening tree if that's easiest. -Kees v2: Add updated stackinit KUnit tests, improve change log, add Reviewed-By v1: https://lore.kernel.org/lkml/20250121003646.work.168-kees@xxxxxxxxxx/ Kees Cook (3): stackinit: Add old-style zero-init syntax to struct tests stackinit: Add union initialization to selftests kbuild: Use -fzero-init-padding-bits=all lib/stackinit_kunit.c | 106 +++++++++++++++++++++++++++++++++++++ scripts/Makefile.extrawarn | 3 ++ 2 files changed, 109 insertions(+) -- 2.34.1