linux-kernel - Re: wrong final bzImage build (regading #14270)

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Message-ID: <20091009195912.GI5311@lenovo>
Date:	Fri, 9 Oct 2009 23:59:12 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Michael Tokarev <mjt@....msk.ru>
Cc:	Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Sam Ravnborg <sam@...nborg.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: wrong final bzImage build (regading #14270)

[Michael Tokarev - Fri, Oct 09, 2009 at 11:39:48PM +0400]
> Ok, some more to this.
>
> It turns out dash's built-in echo command interprets \nnn octal
> sequences by default, and there's no way to turn that off.  So,
> for example, sed-zoffset command from arch/x86/boot/Makefile
> (which includes \1 \2 etc substitutions for sed), when echoed
> in verbose mode (V=1), produces.. interesting characters (with
> ascii code 1 and 2).
>
> It's not practival to replace V=1's echo with /bin/echo I think.
>
> So I'd say it's not a bug in the build system after all, but
> a bug in dash.  Well, at least this expanding-by-default didn't
> trigger another very-difficult-to-find bug (hopefully), but it
> has good potential.
>
> I'll file a bug report against dash.
>
> /mjt
>

OK, thanks Michael!

	-- Cyrill
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