gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?

Jeff Law law@redhat.com
Mon Nov 15 19:11:00 GMT 2010


On 11/08/10 03:49, Richard Guenther wrote:
> On Mon, Nov 8, 2010 at 12:03 AM, Andi Kleen<andi@firstfloor.org>  wrote:
>> Andreas Schwab<schwab@linux-m68k.org>  writes:
>>> The asm fails to mention that it modifies *regs.
>> It has a memory clobber, that should be enough, no?
> No.  A memory clobber does not cover automatic storage.
A memory clobber should clobber anything in memory, including autos in 
memory; if it doesn't, then that seems like a major problem.  I'd like 
to see the rationale behind not clobbering autos in memory.

Jeff



More information about the Gcc mailing list