Re: -fno-builtin not preventing __builtin___snprintf_chk in gcc 11.2.0-19ubuntu1

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On Monday, August 22, 2022, Florian Weimer <fweimer@xxxxxxxxxx> wrote:
> * Reid Wahl via Gcc-help:
>
>> I have no idea what's causing the unit test to fail on Fedora 36 Power
>> 9 LE (the only system in the test bed that's still failing), but I
>> don't have a reproducer or enough information to ask a question. I'll
>> try to get one set up this week and go from there.
>
> The POWER failure could be related to the float128 redirects.  The
> snprintf symbol is necessarily different there as well
> (__snprintfieee128).  This is completely unrelated to fortification.

It is, thank you :) I later got a test system and discovered this --
planned to send a follow-up email and you beat me to it.

>
> I must say I do not find it particularly helpful to label this as
> off-topic on the gcc-help list.  Source foritification is a feature that
> sits between GCC and glibc.  GCC is very much aware of what the chk
> variants do.
>
> Thanks,
> Florian
>
>

-- 
Regards,

Reid Wahl (He/Him)
Senior Software Engineer, Red Hat
RHEL High Availability - Pacemaker



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