Date: Thu, 17 Sep 2009 22:16:42 +1000 From: Peter Jeremy <peterjeremy@acm.org> To: freebsd-current@freebsd.org Subject: Re: Stack protection breaks -fprofile-generate Message-ID: <20090917121642.GA1997@server.vk2pj.dyndns.org> In-Reply-To: <20090917061054.GA48371@server.vk2pj.dyndns.org> References: <20090917061054.GA48371@server.vk2pj.dyndns.org>
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On 2009-Sep-17 16:10:54 +1000, Peter Jeremy <peterjeremy@acm.org> wrote:
>Somewhere between early June and lastest 8.x, -fprofile-generate broke
>on i386. This looks to be related to stack protection.
>
>$ echo 'int main() { return 0; }' > x.c
>$ cc x.c
>$ cc -fprofile-generate x.c
>/usr/lib/libgcov.a(_gcov.o)(.text+0x13df): In function `gcov_exit':
>/usr/src/gnu/lib/libgcov/../../../contrib/gcc/libgcov.c:532: undefined reference to `__stack_chk_fail_local'
Checking on 8.0-BETA4 from yesterday (about SVN rev 197239), it fails
on i386 and succeeds on amd4. It looks suspiciously like this is
more fallout from r195697 but I'm not sure what the fix is.
--
Peter Jeremy
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