Fedora 14 Beta corrupts user data

[Bruno Wolff III]

On Sun, Sep 26, 2010 at 20:32:14 +0200,
  Jan Kratochvil <jan.kratochvil at redhat.com> wrote:
> On Sun, 26 Sep 2010 19:58:05 +0200, Bruno Wolff III wrote:
> > On Sun, Sep 26, 2010 at 10:40:22 -0700, John Reiser <jreiser at bitwagon.com> wrote:
> > > Compiled code for minimum(), maximum(), etc. suffers from a compiler bug:
> > > https://bugzilla.redhat.com/show_bug.cgi?id=634757    -O1 wrong-code by cmove
> [...]
> > Do you know when the gcc bug was introduced?
> 
> gcc-4.5.1-4.fc14: PASS
> gcc-4.5.1-3.fc14: FAIL
> gcc-4.5.1-2.fc14: There was no -2.
> gcc-4.5.1-1.fc14: PASS

Does that mean the problem is restricted to packages built after
gcc-4.5.1-3.fc14 was built on September 7th?