[gentoo-user] GCC 4.7.2-r1 build failing with bus error

[gentoo-user] GCC 4.7.2-r1 build failing with bus error

[Nilesh Govindrajan]

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Hi,

For some weird reason, I'm unable to build gcc 4.7.2-r1.
This is the error -
/bin/sh: line 1:  3871 Bus error               build/genautomata 
/var/tmp/portage/sys-devel/gcc-4.7.2-r1/work/gcc-4.7.2/gcc/config/i386/i386.md 
insn-conditions.md > tmp-automata.c

The thing is, I had downloaded a hardened stage 3 by mistake and then 
switched profile to non hardened.

Could it be because the kernel is compiled with the hardened toolchain?


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[gentoo-user] Re: GCC 4.7.2-r1 build failing with bus error

[Nilesh Govindrajan]

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On Saturday 13 April 2013 10:07:16 AM IST, Nilesh Govindrajan wrote:
> Hi,
>
> For some weird reason, I'm unable to build gcc 4.7.2-r1.
> This is the error -
> /bin/sh: line 1:  3871 Bus error               build/genautomata
> /var/tmp/portage/sys-devel/gcc-4.7.2-r1/work/gcc-4.7.2/gcc/config/i386/i386.md
> insn-conditions.md > tmp-automata.c
>
> The thing is, I had downloaded a hardened stage 3 by mistake and then
> switched profile to non hardened.
>
> Could it be because the kernel is compiled with the hardened toolchain?
>

No it isn't because the kernel is compiled with hardened toolchain. 
Help :S


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Re: [gentoo-user] GCC 4.7.2-r1 build failing with bus error

[Paul Hartman]

On Fri, Apr 12, 2013 at 11:37 PM, Nilesh Govindrajan <me@nileshgr.com> wrote:
> Hi,
>
> For some weird reason, I'm unable to build gcc 4.7.2-r1.
> This is the error -
> /bin/sh: line 1:  3871 Bus error               build/genautomata
> /var/tmp/portage/sys-devel/gcc-4.7.2-r1/work/gcc-4.7.2/gcc/config/i386/i386.md
> insn-conditions.md > tmp-automata.c
>
> The thing is, I had downloaded a hardened stage 3 by mistake and then
> switched profile to non hardened.
>
> Could it be because the kernel is compiled with the hardened toolchain?

I think bus error means the compiler tried to access illegal memory
region or illegal instruction. Maybe a compiler bug? Wrong arch?

I don't know anything about hardened so I don't know if it could be
blocking access to memory somehow.

Re: [gentoo-user] GCC 4.7.2-r1 build failing with bus error

[Nilesh Govindrajan]

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On Tuesday 16 April 2013 02:47:54 AM IST, Paul Hartman wrote:
> On Fri, Apr 12, 2013 at 11:37 PM, Nilesh Govindrajan <me@nileshgr.com> wrote:
>> Hi,
>>
>> For some weird reason, I'm unable to build gcc 4.7.2-r1.
>> This is the error -
>> /bin/sh: line 1:  3871 Bus error               build/genautomata
>> /var/tmp/portage/sys-devel/gcc-4.7.2-r1/work/gcc-4.7.2/gcc/config/i386/i386.md
>> insn-conditions.md > tmp-automata.c
>>
>> The thing is, I had downloaded a hardened stage 3 by mistake and then
>> switched profile to non hardened.
>>
>> Could it be because the kernel is compiled with the hardened toolchain?
>
> I think bus error means the compiler tried to access illegal memory
> region or illegal instruction. Maybe a compiler bug? Wrong arch?
>
> I don't know anything about hardened so I don't know if it could be
> blocking access to memory somehow.
>

Definitely something to do with hardened. Able to compile gcc on 
another vm with same config.
All this mess happened because there's no i686 stage 3 -_-
Did CHOST change on another vm.


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