From: khc@pm.waw.pl (Krzysztof Halasa)
To: linux-arm-kernel@lists.infradead.org
Subject: FYI GCC 4.6.x miscompiles the kernel
Date: Sun, 14 Aug 2011 18:05:55 +0200 [thread overview]
Message-ID: <m31uwo6krg.fsf_-_@intrepid.localdomain> (raw)
In-Reply-To: <201108140327.06726.marek.vasut@gmail.com> (Marek Vasut's message of "Sun, 14 Aug 2011 03:27:05 +0200")
Correction: this bug isn't ARM-specific.
Marek Vasut <marek.vasut@gmail.com> writes:
>> Current gcc-4.6.x SVN, ARMEB EABI.
>
> Shouldn't this go to GCC ML too ?
Nope, I put it in bugzilla.
>> unsigned var[2];
>>
>> void test(int arg)
>> {
>> unsigned v = *(volatile unsigned *)(&var[arg]);
>> *(volatile unsigned *)(&var[arg]) = v;
>> }
>>
>> Disassembly of section .text:
>>
>> 00000000 <test>:
>> 0: e12fff1e bx lr
On x86-64:
0000000000000000 <test>:
0: f3 c3 repz retq
--
Krzysztof Halasa
prev parent reply other threads:[~2011-08-14 16:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-13 23:10 FYI ARM GCC 4.6.x miscompiles the kernel Krzysztof Halasa
2011-08-14 1:27 ` Marek Vasut
2011-08-14 16:05 ` Krzysztof Halasa [this message]
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