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Date:      Tue, 9 Jun 2020 19:13:04 -0500
From:      Kyle Evans <kevans@freebsd.org>
To:        John Baldwin <jhb@freebsd.org>
Cc:        src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>,  svn-src-head <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r361994 - in head/sys/mips: cavium/cryptocteon nlm/dev/sec
Message-ID:  <CACNAnaFCtc-u%2BBS2AStfPXOoGxTz2QcJGvh_ppAWpPLSncioPA@mail.gmail.com>
In-Reply-To: <202006100009.05A09VkH082752@repo.freebsd.org>
References:  <202006100009.05A09VkH082752@repo.freebsd.org>

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On Tue, Jun 9, 2020 at 7:09 PM John Baldwin <jhb@freebsd.org> wrote:
>
> Author: jhb
> Date: Wed Jun 10 00:09:31 2020
> New Revision: 361994
> URL: https://svnweb.freebsd.org/changeset/base/361994
>
> Log:
>   Add some default cases for unreachable code to silence compiler warnings.
>
>   This was caused by r361481 when the buffer type was changed from an
>   int to an enum.
>
>   Reported by:  mjg, rpokala
>   Sponsored by: Chelsio Communications
>
> Modified:
>   head/sys/mips/cavium/cryptocteon/cryptocteon.c
>   head/sys/mips/nlm/dev/sec/nlmseclib.c
>
> Modified: head/sys/mips/cavium/cryptocteon/cryptocteon.c
> ==============================================================================
> --- head/sys/mips/cavium/cryptocteon/cryptocteon.c      Tue Jun  9 23:03:48 2020        (r361993)
> +++ head/sys/mips/cavium/cryptocteon/cryptocteon.c      Wed Jun 10 00:09:31 2020        (r361994)
> @@ -323,6 +323,8 @@ cryptocteon_process(device_t dev, struct cryptop *crp,
>                         goto done;
>                 }
>                 break;
> +       default:
> +               break;
>         }
>
>         if (csp->csp_cipher_alg != 0) {
>

This one could kind of looks like it should also be an
__assert_unreachable(), and perhaps this bit not too long later:

        case CRYPTO_BUF_CONTIG:
                iovlen = crp->crp_buf.cb_buf_len;
                od->octo_iov[0].iov_base = crp->crp_buf.cb_buf;
                od->octo_iov[0].iov_len = crp->crp_buf.cb_buf_len
                iovcnt = 1;
                break;
        default:
-                panic("can't happen");
+                __assert_unreachable();
       }



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