Compiler segfault under fbsd7?

Jeremy Chadwick koitsu at
Tue May 27 10:45:55 UTC 2008

On Tue, May 27, 2008 at 12:38:05PM +0200, cy at wrote:
>   You are right: make buildworld exits with
>   /usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/genattrtab.c: In 
> function 'make_internal_attr':
> /usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/genattrtab.c:4240: 
> internal compiler error: Segmentation fault: 11

You have CPU, motherboard, or memory problems.  My vote is on memory.

You can download memtest86 or memtest86+ (burn either to a CD via ISO,
or put them on a floppy and boot them) and let it run for a while.   You
will probably see errors there within a few minutes.

>   So it's some hardware than (could it be an old BIOS).

Possible, but doubtful.

>   Or could it be the HD, fdisk gives:
>   ******* Working on device /dev/ad0 *******
> parameters extracted from in-core disklabel are:
> cylinders=155061 heads=16 sectors/track=63 (1008 blks/cyl)
> Figures below won't work with BIOS for partitions not in cyl 1
> parameters to be used for BIOS calculations are:
> cylinders=155061 heads=16 sectors/track=63 (1008 blks/cyl)
> Media sector size is 512
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 1 is:
> sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
>     start 63, size 156296322 (76316 Meg), flag 80 (active)
>         beg: cyl 0/ head 1/ sector 1;
>         end: cyl 1023/ head 254/ sector 63
>   I tried to fix this with fdisk to the correct 1024/255/63 but the upper 
> part of the output stays always the same ...

I don't see anything wrong with the fdisk output.

gcc is segfaulting.  This is very likely going to happen as a result of
bad memory, not as a result of a bad disk.  You'd be having many other
problems (not sig11; I'm talking random I/O errors or the system locking
up hard) if you had a bad disk.

| Jeremy Chadwick                                jdc at |
| Parodius Networking              |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |

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