Re: gcc-3.3.1-hammer breaks mm/memory.c

From: J.A. Magallon (jamagallon@able.es)
Date: Tue Jul 15 2003 - 19:05:32 EST

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On 07.16, J.A. Magallon wrote:
> Hi all...
>
> After some binary search and a 'couple' kernel builds, I narrowed the
> problem to mm/memory.c. With that file built at -O1:
>
> CFLAGS_memory.o = -O1
>
> The kernel boots, starts /sbin/init and looks like working normally
> (2.4.22-pre5).
>
> Anybody can see what is miscompiled with an assembler listing ?
> Any #pragma to switch optmizations on the half of a file or for
> a function ?
>

I finally got this: -O2 fails but

CFLAGS_memory.o = -Os -falign-functions -falign-jumps -falign-loops -falign-labels -fprefetch-loop-arrays -freorder-blocks

works.

Those are specific options disabled by -Os, but -Os does more things...
(assembler output is very different)

Any SuSE site (hammer comes from SuSE, isn't it ?) to submit a decent
bug report ?

TIA

-- 
J.A. Magallon <jamagallon@able.es>      \                 Software is like sex:
werewolf.able.es                         \           It's better when it's free
Mandrake Linux release 9.2 (Cooker) for i586
Linux 2.4.22-pre5-jam1m (gcc 3.3.1 (Mandrake Linux 9.2 3.3.1-0.2mdk))
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