Re: [PATCH] libc/uClibc: add workaround patch for ICE in m68k builds

[Esben Haabendal <esben dot haabendal at dev dot prevas dot dk>]

"Yann E. MORIN" <yann.morin.1998@free.fr> writes:

> Esben, All,
>
> On Friday 28 September 2012 14:47:56 Esben Haabendal wrote:
>> "Yann E. MORIN" <yann.morin.1998@free.fr> writes:
>> > Then, naybe it's gcc-4.6.3 (and earlier? maybe up to 4.7.1?) that should
>> > be fixed, instead.
>> 
>> Yes, but it don't know what fixed this in 4.7.2, so it is an uphill
>> battle backporting this to all older GCC releases.
>
> Yep, that can be tedious...
>
> Let's say that at least gcc-4.7.2 is required for m68k, then.
>
>> > I've updated your sample to use 4.7.2 instead of 4.6.3. I have no way to
>> > test m68k noMMU; could you give it a spin, please?
>> 
>> I will.
>> 
>> Late yesterday, I unfortunately found another ICE issue (in 4.7.2). It
>> has already been reported:
>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53833
>
> That bug report contains a one-liner patch. Not sure it is valid, but at
> least that's a starting point.

The patch removes the atomic ops.  Not really a proper fix...

I'd rather use an older gcc with optimization disabled in uClibc.

/Esben

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