From: Antonio Quartulli <a...@unstable.cc> Date: Tue, 19 May 2020 11:13:33 +0200
> Compiling with -Wunused triggers the following warning: > > ./include/net/sch_generic.h: In function ‘qdisc_cb_private_validate’: > ./include/net/sch_generic.h:464:23: warning: unused variable ‘qcb’ > [-Wunused-variable] > 464 | struct qdisc_skb_cb *qcb; > | ^~~ > > as the qcb variable is only used to compute the sizeof one of its members. It's referenced in the code, therefore it is not "unused". If in some configuration BUILD_BUG_ON() does not reference it's arguments, that's the bug that needs to be fixed.
