Re: stack usage with libgcc math funcs

[Mike Frysinger <vapier@gentoo.org>]

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On Wednesday 24 December 2008 17:57:53 Kaz Kojima wrote:
> Mike Frysinger <vapier@gentoo.org> wrote:
> > i dont know superh assembly, so i cant really check the code myself. 
> > starting with at gcc-4.1.2 (at least, gcc-3.4.6 doesnt seem to have this
> > issue), a few objects in libgcc.a lack GNU-stack markings.  here is the
> > scanelf output against libgcc.a from gcc-4.3.2.  basically, '!WX' just
> > means that the objects do not have a .note.GNU-stack section.
> > assuming libgcc doesnt actually use the stack to exec code, the attached
> > patch should fix things i think.
>
> Thanks for pointing this out.

i'm guessing that means they're correct :)

> Could you please send your
> patches to gcc-patches or file this issue to gcc bugzilla?

i dont think people like it when i post patches to bugzilla.  they tell me to 
use gcc-patches.

> Unfortunately, now gcc trunk is in stage 4 and any patches
> for non strict regressions can't be accepted temporary.
> I'll schedule these patches for 4.5, then apply them to
> the open branches after 4.5.

well, i would say this is a long standing regression.  gcc-3.4.6 does not 
result in exec stacks with any of the libgcc.a math functions ... but you're 
the gcc expert.
-mike

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