Re: transcode / nasm

On Monday 08 December 2003 23:38, Pav Lucistnik wrote:
> V po, 08. 12. 2003 v 23:32, Christoph Sold pí¹e:
> > > I just successfully built transcode with nasm on my 5.2-BETA
> > >
> > > $ uname -a
> > > FreeBSD hood.oook.cz 5.2-BETA FreeBSD 5.2-BETA #1: Fri Dec  5
> > > 23:01:46 CET 2003    
> > > root_at_hood.oook.cz:/mnt/2/obj/usr/src/sys/PAV i386
> > >
> > > $ nasm -v
> > > NASM version 0.98.38 compiled on Dec  8 2003
> > >
> > > Can you check you have latest version of nasm?
> >
> > nasm -v
> > NASM version 0.98.38 compiled on Nov 22 2003
> >
> > Looks like the very same version.
>
> Yes.
[snip]

Sorry for the delay -- had to get a nap, then to work.

> Well I don't know. Is that failure reproducable?

Yes, always.

> Can you rebuild nasm with debug symbols

root_at_kiste:nasm# portupgrade -f devel/nasm 2>&1 | tee build-nasm.log
--->  Reinstalling 'nasm-0.98.38,1' (devel/nasm)
--->  Building '/usr/ports/devel/nasm' with make flags: A4=yes 
"CFLAGS=-O -g -pipe" STRIP=
[...snip...]
/usr/local/bin/nasm -felf -g -o swap.o swap.s
gmake[2]: *** [swap.o] Segmentation fault (core dumped)
gmake[2]: *** Deleting file `swap.o'
[ ... see build-nasm.log , attached]

> and capture a backtrace from the core file?

root_at_kiste:root# portinstall -v multimedia/transcode 2>&1 | tee 
build-transcode.log
[ ... see build-transcode.log , attached ]

root_at_kiste:root# find /usr/ports/multimedia/transcode/ -name 
"*nasm*core*"
/usr/ports/multimedia/transcode/work/transcode-0.6.10/aclib/nasm.core
[ ... core file attached ... ]

> Does the direct invocation of nasm (outside of make process) fails
> too?

root_at_kiste:aclib# /usr/local/bin/nasm -felf -g -o swap.o swap.s
Segmentation fault (core dumped)

Neither core file shows any meaningful stack trace. OK, here's the hard 
run:

root_at_kiste:aclib# pwd
/usr/ports/multimedia/transcode/work/transcode-0.6.10/aclib
root_at_kiste:aclib# gdb
GNU gdb 5.2.1 (FreeBSD)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you 
are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for 
details.
This GDB was configured as "i386-undermydesk-freebsd".
(gdb) file /usr/local/bin/nasm
Reading symbols from /usr/local/bin/nasm...done.
(gdb) set args -felf -g -o swap.o swap.s
(gdb) run
Starting program: /usr/local/bin/nasm -felf -g -o swap.o swap.s

Program received signal SIGSEGV, Segmentation fault.
0x280d0119 in strlen () from /lib/libc.so.5
(gdb) bt
#0  0x280d0119 in strlen () from /lib/libc.so.5
#1  0xbfbfeae4 in ?? ()
#2  0x0805fe7a in elf_write () at output/outelf.c:1028
#3  0x0805dc2b in elf_cleanup (debuginfo=1) at output/outelf.c:253
#4  0x08049371 in main (argc=6, argv=0xbfbfeae4) at nasm.c:284
#5  0x08048d62 in _start ()


Any hints?

Thanks for your help
-Christoph Sold