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Re: 3.3 problem of -fzero-initialized-in-bss w/-ffreestanding
- From: "Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>
- To: gcc at gcc dot gnu dot org, mark at codesourcery dot com, obrien at FreeBSD dot org
- Date: Mon, 14 Jul 2003 13:44:48 -0400 (EDT)
- Subject: Re: 3.3 problem of -fzero-initialized-in-bss w/-ffreestanding
- References: <20030714173201.GB74108@dragon.nuxi.com>
> From: "David O'Brien" <obrien@FreeBSD.org>
>
> GCC 3.3 now has -fzero-initialized-in-bss as the default. That is fine
> and dandy for userland programs. But it caused a major problem for the
> FreeBSD kernel when we upgraded from 3.2.2 to 3.3.1 [snapshot].
>
> -no-zero-initialized-in-bss should be the default when -ffreestanding is
> specified -- GCC should not^H^H^Hcannot make assumptions about when BSS
> zeroing occurs in an -ffreestanding environment.
>
> Can this change be made for 3.3.1 release?
> -- David (obrien@FreeBSD.org)
Fine with me if Mark agrees. Assuming we'll do this, do you have a
patch in mind? (We'll probably need slightly different patches for
3.3.1 vs mainline given the recent option handling work.)
--
Kaveh R. Ghazi ghazi@caip.rutgers.edu