Re: __stack_chk_fail in regexp is not defined

[Andrey Borzenkov]

В Fri, 8 Nov 2013 14:42:43 -0600
Glenn Washburn <address@hidden> пишет:

> On Fri, 08 Nov 2013 19:54:43 +0100
> Vladimir 'φ-coder/phcoder' Serbinenko <address@hidden> wrote:
> 
> > On 08.11.2013 19:42, Glenn Washburn wrote:
> > > Now, I'm getting this error while building.  Bug in the awk script?
> > > 
> > > cat syminfo.lst | sort | gawk -f ./grub.git/grub-core/genmoddep.awk
> > > > moddep.lst || (rm -f moddep.lst; exit 1) __stack_chk_fail in
> > > > regexp is
> > > not defined
> > > 
> > What compiler do you use and which additional options did you pass to
> > it? It inserted this function call. We need either to provide this
> > function or inhibit compiler from emiting such calls.
> 
> I'm using gcc 4.7 on Ubuntu from the ubuntu-toolchain-r/test ppa.  I do
> see a reference to __stack_chk_fail at
> grub-core/efiemu/runtime/efiemu.c:192.  It doesn't look like that file
> is generated.  Perhaps that function was accidentally added to that
> file?

It comes from using -fstack-protector GCC option. But configure should
have added -fno-stack-protector in this case.

Could you check defaults using

/path/to/your/gcc -Q --help=common

whether it is active by default? Also whether -fno-stack-protector was
used during compilation?

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