gcc-4.6.0-10.fc15.x86_64 breaks grub-0.97-71.fc15 and later

[Bruno Wolff III]

On Wed, Jul 06, 2011 at 02:25:56 +0200,
  "Joshua C." <joshuacov at googlemail.com> wrote:
> I've been testing with grub and found an interesting problem. When I
> install the package
> http://kojipkgs.fedoraproject.org/packages/grub/0.97/71.fc15/x86_64/grub-0.97-71.fc15.x86_64.rpm
> everything is fine and grub works as it should:
> 
> When I recompile the grub-rpm and reinstall it I get this:
> 
> Error 6rd: Mismatched or corrupt version of stage1/stage2
 
> All newer packages result in the same error "Error 6rd: Mismatched or
> corrupt version of stage1/stage2" and grub reports that 31 sectors
> have been embedded.
> So why does the gcc-4.6.0-10.fc15.x86_64 breaks my package???

Note that this problem has been reported as bug 718722.