gcc-4.5-RH in F14

Roland McGrath roland at redhat.com
Fri Jul 9 21:32:57 UTC 2010

> > Unresolved regressions
> > ----------------------
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=16353
> > Subject         : 2.6.35 regression
> > Submitter       : Zeev Tarantov <zeev.tarantov at gmail.com>
> > Date            : 2010-07-05 13:04 (4 days old)
> > Message-ID      : <loom.20100705T144459-919 at post.gmane.org>
> > References      :
> http://marc.info/?l=linux-kernel&m=127836002702522&w=2
> This is a gcc-4.5 issue. Whether it's also something that we should
> change in the kernel is unclear, but at least as of now, the rule is
> that you cannot compile the kernel with gcc-4.5. No idea whether the
> compiler is just entirely broken, or whether it's just that it
> triggers something iffy by being overly clever.

What you cited talks about lossage in the metadata for ftrace syscall
tracing.  It's hardly fatal.  There's already a fix on its way upstream,
and it appears to have been nothing more than default alignment changes vs
the highly-fragile ftrace hooey.  "compiler is just entirely broken" is
laughable even to have speculated about for the actual facts here.


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