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Date: Wed, 19 Feb 2020 23:49:00 +0100
From: Joerg Sonnenberger <joerg@bec.de>
To: Jeff Roberson <jeff@FreeBSD.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: Re: svn commit: r358133 - head/sys/vm
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On Wed, Feb 19, 2020 at 10:34:23PM +0000, Jeff Roberson wrote:
> Author: jeff
> Date: Wed Feb 19 22:34:22 2020
> New Revision: 358133
> URL: https://svnweb.freebsd.org/changeset/base/358133
> 
> Log:
>   Silence a gcc warning about no return from a function that handles every
>   possible enum in a switch statement.  I verified that this emits nothing
>   as expected on clang.  radix relies on constant propagation to eliminate
>   any branching from these access routines.

__builtin_unreachable() ?

Joerg