Re: [RFC PATCH v3 11/12] powerpc: Remove unreachable() from WARN_ON()

Le 04/07/2022 à 13:45, Peter Zijlstra a écrit :

On Wed, Jun 29, 2022 at 06:30:23PM +0000, Christophe Leroy wrote:

quoted

The problem is that that function has size 0:

00000000000003d0 l     F .text	0000000000000000
qdisc_root_sleeping_lock.part.0

I'm somewhat confused; how is an empty STT_FUNC a valid construct on
Power?

So am I. It is likely not a valid construct, but that's what GCC seems 
to generate when you call annotate_unreachable().