Re: Native CD test results

[Pavel Roskin <proski@gnu.org>]

On Thu, 2008-03-27 at 16:24 +0800, Bean wrote:
> On Thu, Mar 27, 2008 at 10:09 AM, Pavel Roskin <proski@gnu.org> wrote:
> >  It turned out that the splash image called isolinux/splash.jpg is
> >  actually a png file.  What's worse, GRUB won't use it because it's not
> >  8-bit:
> >
> >  $ identify splash.jpg
> >  splash.jpg PNG 640x480 640x480+0+0 DirectClass 16-bit 436.441kb
> 
> It's quite easy to support 16-bit png, but i don't have one to test.
> would you please send the image to me ?

http://red-bean.com/proski/splash.png

> >  Once I had Fedora 9 installed, I tried to install the latest GRUB on
> >  it.  But I would get a strange message: "Warning: syntax error
> >  (missing slash) in `'"
> >
> >  It turned out that grub_parse_color_name_pair() was called from
> >  normal/menu.c, which didn't know a prototype for that function.  Even
> >  though NULL was passed as the "name" argument,
> >  grub_parse_color_name_pair() would see some non-zero value.  Adding
> >  the declaration to normal.h fixed the problem.
> 
> I think this is caused by compile optimization. grub use -mregparm=3
> option, which means use register instead of stack to pass parameter.
> When caller encounter a function without prototype, it use the c
> calling convention, which conflict with callee. But i think gcc is not
> to be blame here, because it just have no way to know better, we could
> be calling a function in the c library, in which case, the standard
> calling convention is the correct one.

That makes sense.  Thanks for the explanation.

By the way, the fix for GRUB hanging when booting from a CD is not
making any difference on the system where I discovered it initially.  I
need to look deeper.

-- 
Regards,
Pavel Roskin