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SubjectRe: [UML] 3.16 build without optimization fails
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Hi.

Thanks for your answer.

There goes my plan to better understand an UML kernel lock up by using a debugger... Everything gets optimised out with -O2 :-(

Can you give an example function that relies on this GCC feature?

With kind regards
Thomas

Am 19.08.2014 22:06 schrieb Valdis.Kletnieks@vt.edu:
>
> On Tue, 19 Aug 2014 21:12:10 +0200, Thomas Meyer said:
> > > Hi,
> > >
> > > the build with -O0 fails with:
>
> > > bug or feature?
> > >
> > > any ideas?
>
> Feature.  The kernel is *known* to not build with -O0, because that
> disables *all* function inlining, and there's several functions that *have*
> to be inlined in order to function properly (most notably, anything
> that uses the gcc __builtin_return_address in a function that is expected
> to be inlined).
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