Speex dev - Aug 2004 - Coredumps when --enable-sse is selected

System: Linux 2.4.25, glibc-2.3.2, gcc-3.2.3 (weird palindrome there), on a
Williamette core Pentium 4 (1.6Ghz) system.

I've tried both speex 1.1.5 release, and the current CVS (which self-IDs as
1.1.4), and the result is the same.

I suspect some funk in the use of the SSE intrinsics macros.

Backtrace:

#0  0x40024594 in filter_mem2_10 (x=0x805f31c, _num=0x8061fb8,
_den=0x8061fe4, y=0x806071c, N=160, ord=10, 
    _mem=0x8062150) at xmmintrin.h:790
#1  0x400248b4 in filter_mem2 (x=0x805f31c, _num=0x8061fb8, _den=0x8061fe4,
y=0x806071c, N=1, ord=0, 
    _mem=0x8061fe4) at filters_sse.h:135
#2  0x40019d1e in nb_encode (state=0x805ebd0, vin=0x80582b4,
bits=0xbfffe840) at nb_celp.c:314
#3  0x40025e33 in speex_encode_native (state=0x8061fe4, in=0x0, bits=0x0) at
modes.c:717
#4  0x4001dd30 in sb_encode (state=0x8054e90, vin=0xbfffd1c0,
bits=0xbfffe840) at sb_celp.c:309
#5  0x40025eea in speex_encode_int (state=0x8054e90, in=0xbfffe840,
bits=0x0) at modes.c:784
#6  0x0804a150 in main (argc=134565152, argv=0xbffff884) at

My build line is as follows:

CFLAGS='-O -g -march=pentium4 -mcpu=pentium4' CXXFLAGS='-O -g
-march=pentium4 -mcpu=pentium4' ./configure --enable-sse --enable-epic-48k
--prefix=/usr/local

Command line which triggers the coredump:

$ speexenc --dtx --vbr -w test.wav test.spx   
Encoding 16000 Hz audio using wideband (sub-band CELP) mode (mono)

=MB--- >8 ----
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Hi,

I've tried the same configure options on my system and it doesn't crash.
I have the same glibc and gcc 3.3.2 (can you see if a newer gcc works?).
Also, could you explore a bit with different options so we can narrow it
down a bit. For example, does it work with the default CFLAGS or without
--vbr or --dtx. Last thing, maybe it's the file. If so, please send me
the smallest sample you have that reproduces the problem.

        Jean-Marc

Le mer 05/05/2004 à 21:32, Malcolm Baldridge a écrit :
> System: Linux 2.4.25, glibc-2.3.2, gcc-3.2.3 (weird palindrome there), on a
> Williamette core Pentium 4 (1.6Ghz) system.
> 
> I've tried both speex 1.1.5 release, and the current CVS (which
self-IDs as
> 1.1.4), and the result is the same.
> 
> I suspect some funk in the use of the SSE intrinsics macros.
> 
> Backtrace:
> 
> #0  0x40024594 in filter_mem2_10 (x=0x805f31c, _num=0x8061fb8,
> _den=0x8061fe4, y=0x806071c, N=160, ord=10, 
>     _mem=0x8062150) at xmmintrin.h:790
> #1  0x400248b4 in filter_mem2 (x=0x805f31c, _num=0x8061fb8, _den=0x8061fe4,
> y=0x806071c, N=1, ord=0, 
>     _mem=0x8061fe4) at filters_sse.h:135
> #2  0x40019d1e in nb_encode (state=0x805ebd0, vin=0x80582b4,
> bits=0xbfffe840) at nb_celp.c:314
> #3  0x40025e33 in speex_encode_native (state=0x8061fe4, in=0x0, bits=0x0)
at
> modes.c:717
> #4  0x4001dd30 in sb_encode (state=0x8054e90, vin=0xbfffd1c0,
> bits=0xbfffe840) at sb_celp.c:309
> #5  0x40025eea in speex_encode_int (state=0x8054e90, in=0xbfffe840,
> bits=0x0) at modes.c:784
> #6  0x0804a150 in main (argc=134565152, argv=0xbffff884) at
> 
> My build line is as follows:
> 
> CFLAGS='-O -g -march=pentium4 -mcpu=pentium4' CXXFLAGS='-O -g
> -march=pentium4 -mcpu=pentium4' ./configure --enable-sse
--enable-epic-48k
> --prefix=/usr/local
> 
> Command line which triggers the coredump:
> 
> $ speexenc --dtx --vbr -w test.wav test.spx   
> Encoding 16000 Hz audio using wideband (sub-band CELP) mode (mono)
> 
> =MB> --- >8 ----
> List archives:  http://www.xiph.org/archives/
> Ogg project homepage: http://www.xiph.org/ogg/
> To unsubscribe from this list, send a message to
'speex-dev-request@xiph.org'
> containing only the word 'unsubscribe' in the body.  No subject is
needed.
> Unsubscribe messages sent to the list will be ignored/filtered.
-- 
Jean-Marc Valin
http://www.xiph.org/~jm/
LABORIUS
Université de Sherbrooke, Québec, Canada


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> I've tried the same configure options on my system and it doesn't
crash.
> I have the same glibc and gcc 3.3.2 (can you see if a newer gcc works?).
When I build it with gcc-3.3.3, the problem disappears.  I guess the older
gcc's XMM macros were buggy.

Thanks for the suggestion.
> Also, could you explore a bit with different options so we can narrow it
> down a bit. 
Actually, the crash occurred with even very simple options.

I'm now encoding the very same file which caused segfaults in the
gcc-3.2.3-built binary.

I would probably put a note (or modify the build script to detect/warn the
user) about gcc-3.2 and --enable-sse.  I suspect if we lookup the gcc
bugbase, we'll see some changes made to the SSE intrinsics.

Thanks!

=MB
<p>--- >8 ----
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