[Cake] [PATCH] net/sch_generic.h: use sizeof_member() and get rid of unused variable
davem at davemloft.net
Tue May 19 18:40:19 EDT 2020
From: Antonio Quartulli <a at 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.
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