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Date:      Wed, 14 Mar 2018 14:44:37 +0200
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Gleb Smirnoff <glebius@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r330883 - head/stand/userboot/userboot
Message-ID:  <45a6c658-1133-ad46-d8df-48ee5bbccddf@FreeBSD.org>
In-Reply-To: <201803132254.w2DMsU2r005593@repo.freebsd.org>
References:  <201803132254.w2DMsU2r005593@repo.freebsd.org>

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On 14/03/2018 00:54, Gleb Smirnoff wrote:
> Author: glebius
> Date: Tue Mar 13 22:54:29 2018
> New Revision: 330883
> URL: https://svnweb.freebsd.org/changeset/base/330883
> 
> Log:
>   Fix typo that misteriously passes compilation.
> 
> Modified:
>   head/stand/userboot/userboot/main.c
> 
> Modified: head/stand/userboot/userboot/main.c
> ==============================================================================
> --- head/stand/userboot/userboot/main.c	Tue Mar 13 21:42:38 2018	(r330882)
> +++ head/stand/userboot/userboot/main.c	Tue Mar 13 22:54:29 2018	(r330883)
> @@ -159,7 +159,7 @@ extract_currdev(void)
>  	//bzero(&dev, sizeof(dev));
>  
>  #if defined(USERBOOT_ZFS_SUPPORT)
> -	CT_ASSERT(sizeof(struct disk_devdesc) >= sizeof(struct zfs_devdesc));
> +	CTASSERT(sizeof(struct disk_devdesc) >= sizeof(struct zfs_devdesc));
>  	if (userboot_zfs_found) {
>  		struct zfs_devdesc zdev;

It seems that this was compiled to a call to an external CT_ASSERT function.
Probably not enough warning flags to fail on a function without a prototype?
Also, not sure how it worked at run-time.  Maybe userboot.so is linked and
loaded in such a way that it allows undefined symbols as long as they are not
used.  So, probably extract_currdev() just didn't get called.

Anyway, thank you for spotting and fixing.

-- 
Andriy Gapon



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