Messages in this thread | | | Date | Tue, 9 Nov 2004 00:38:06 +0100 | From | Adrian Bunk <> | Subject | Use -ffreestanding? |
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On Mon, Nov 08, 2004 at 08:01:30PM +0100, Andi Kleen wrote: > On Mon, Nov 08, 2004 at 07:34:49PM +0100, Adrian Bunk wrote: > > On Mon, Nov 08, 2004 at 06:51:20PM +0100, Andi Kleen wrote: > > > On Mon, Nov 08, 2004 at 05:31:01PM +0100, Adrian Bunk wrote: > > > > On Mon, Nov 08, 2004 at 05:19:35PM +0100, Andi Kleen wrote: > > > > > > Rethinking it, I don't even understand the sprintf example in your > > > > > > changelog entry - shouldn't an inclusion of kernel.h always get it > > > > > > right? > > > > > > > > > > Newer gcc rewrites sprintf(buf,"%s",str) to strcpy(buf,str) transparently. > > > > > > > > Which gcc is "Newer"? > > > > > > I saw it with 3.3-hammer, which had additional optimizations in this > > > area at some point. Note that 3.3-hammer is widely used. I don't > > > know if 3.4 does it in the same way. > > > > Is this a -hammer specific problem? > > No, I just checked a 4.0 mainline gcc and it does it too. > > Note I saw it on x86-64, don't know if it occurs on i386 too.
OK, I see the difference: After removing -fno-unit-at-a-time, I see this problem, too.
Why doesn't the kernel use -ffreestanding which should prevent all such problems?
> -Andi
cu Adrian
--
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