From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Behun <marek.behun@nic.cz>
Date: Tue, 8 Sep 2020 01:58:01 +0200
Subject: [PATCH U-BOOT v3 03/30] fs: btrfs: Crossport
 btrfs_read_dev_super() from btrfs-progs
In-Reply-To: <20200907222604.GA706@bill-the-cat>
References: <20200624160316.5001-1-marek.behun@nic.cz>
 <20200624160316.5001-4-marek.behun@nic.cz>
 <20200907222604.GA706@bill-the-cat>
Message-ID: <20200908015801.3b72869a@nic.cz>
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To: u-boot@lists.denx.de

On Mon, 7 Sep 2020 18:26:04 -0400
Tom Rini <trini@konsulko.com> wrote:

> On Wed, Jun 24, 2020 at 06:02:49PM +0200, Marek Beh?n wrote:
> 
> > From: Qu Wenruo <wqu@suse.com>
> > 
> > This patch uses generic code from btrfs-progs to read one super block
> > from block device.  
> [snip]
> > +/* Provide a compatibility layer to make code syncing easier */
> > +
> > +/* A simple wraper to for error() used in btrfs-progs */
> > +__attribute__((format (__printf__, 1, 2)))
> > +static inline void error(const char *fmt, ...)
> > +{
> > +	printf("BTRFS: ");
> > +	printf(fmt, __builtin_va_arg_pack());
> > +	printf("\n");
> > +}  
> 
> Note that this does not work with LLVM (no __builtin_va_arg_pack()).
> I'm reworking this call pr_err(...) under the hood instead, with "BTRFS: " 
> included in the message.
> 

:( clang does not support it? Even the newest version? That is a pity.

Marek