Re: git: 4849767cb16a - main - md5: Improve compatibility.

From: Li-Wen Hsu <lwhsu_at_freebsd.org>
Date: Tue, 09 May 2023 06:34:18 UTC 
On Mon, May 8, 2023 at 4:05 PM Dag-Erling Smørgrav <des@freebsd.org> wrote:
>
> The branch main has been updated by des:
>
> URL: https://cgit.FreeBSD.org/src/commit/?id=4849767cb16a4dbd4d1b923db25d34029c09e7b0
>
> commit 4849767cb16a4dbd4d1b923db25d34029c09e7b0
> Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
> AuthorDate: 2023-05-08 06:56:09 +0000
> Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
> CommitDate: 2023-05-08 06:56:22 +0000
>
>     md5: Improve compatibility.
>
>     * Overhaul the GNU compatibility mode to more closely emulate what the GNU tools do.
>
>     * Add a Perl compatibility mode which emulates the shasum tool that ships with Perl.  This is currently not installed.
>
>     * Overhaul the tests.
>
>     Sponsored by:   Klara, Inc.
>     Reviewed by:    kevans
>     Differential Revision:  https://reviews.freebsd.org/D39446

gcc12 reports:

/workspace/src/sbin/md5/md5.c: In function 'MDInput':
/workspace/src/sbin/md5/md5.c:737:17: error: comparison of unsigned
expression in '< 0' is always false [-Werror=type-limits]
  737 |         if (len < 0) {
      |                 ^

(From https://ci.freebsd.org/job/FreeBSD-main-amd64-gcc12_build/950/console )

Not sure if this can be changed to `len <= 0`, or just remove this
part. Can you check it? Thanks!

Best,
Li-Wen