On Fri, Apr 26, 2024 at 10:45:17AM -0600, Gustavo A. R. Silva wrote: > Prepare for the coming implementation by GCC and Clang of the > __counted_by attribute. Flexible array members annotated with > __counted_by can have their accesses bounds-checked at run-time > via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE > (for strcpy/memcpy-family functions). > > Also, -Wflex-array-member-not-at-end is coming in GCC-14, and we are > getting ready to enable it globally. > > So, use the `DEFINE_FLEX()` helper for an on-stack definition of > a flexible structure where the size of the flexible-array member > is known at compile-time, and refactor the rest of the code, > accordingly. > > With these changes, fix the following warning: > net/bluetooth/hci_conn.c:2116:50: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] > > Link: https://github.com/KSPP/linux/issues/202 > Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx> Looks right to me. Yay for DEFINE_FLEX(). :) Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> -- Kees Cook
