backtrace [was: Core dump only on Solatris 8 not 9]

[David Relson]

On Mon, 22 Aug 2005 19:28:03 -0700 (PDT)
The Ha wrote:

> Hi  Matthias
> 
> Here is the gdb output
> Solaris8:~/tmp>gdb /home/tha/bin/bogofilter core
> GNU gdb 5.0
> Copyright 2000 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 "sparc-sun-solaris2.8"...(no debugging symbols found)...
> Core was generated by `bogofilter -s'.
> Program terminated with signal 10, Bus Error.
> Reading symbols from /usr/local/lib/libdb-4.3.so...(no debugging symbols found)...done.
> Loaded symbols for /usr/local/lib/libdb-4.3.so
> Reading symbols from /usr/local/lib/libgsl.so.0...(no debugging symbols found)...done.
> Loaded symbols for /usr/local/lib/libgsl.so.0
> Reading symbols from /usr/local/lib/libgslcblas.so.0...(no debugging symbols found)...done.
> Loaded symbols for /usr/local/lib/libgslcblas.so.0
> Reading symbols from /usr/lib/libm.so.1...(no debugging symbols found)...done.
> Loaded symbols for /usr/lib/libm.so.1
> Reading symbols from /usr/lib/libc.so.1...(no debugging symbols found)...done.
> Loaded symbols for /usr/lib/libc.so.1
> Reading symbols from /usr/lib/librt.so.1...(no debugging symbols found)...done.
> Loaded symbols for /usr/lib/librt.so.1
> Reading symbols from /usr/lib/libdl.so.1...(no debugging symbols found)...done.
> Loaded symbols for /usr/lib/libdl.so.1
> Reading symbols from /usr/lib/libaio.so.1...(no debugging symbols found)...done.
> Loaded symbols for /usr/lib/libaio.so.1
> Reading symbols from /usr/platform/SUNW,Ultra-60/lib/libc_psr.so.1...
> (no debugging symbols found)...done.
> Loaded symbols for /usr/platform/SUNW,Ultra-60/lib/libc_psr.so.1
> #0  0xfef40da4 in iconv () from /usr/lib/libc.so.1
> (gdb) backtrace full
> #0  0xfef40da4 in iconv () from /usr/lib/libc.so.1
> No symbol table info available.
> #1  0x2b434 in base64_validate ()
> No symbol table info available.
> #2  0x2b688 in iconvert ()
> No symbol table info available.
> #3  0x1bf7c in format_log_update ()
> No symbol table info available.
> #4  0x1c1f8 in yyinput ()
> No symbol table info available.
> #5  0x1daec in yylex ()
> No symbol table info available.
> #6  0x1d7a0 in yylex ()
> No symbol table info available.
> #7  0x24114 in get_token ()
> No symbol table info available.
> #8  0x18e60 in collect_words ()
> No symbol table info available.
> #9  0x15060 in bogofilter ()
> No symbol table info available.
> #10 0x17390 in bogomain ()
> No symbol table info available.
> #11 0x15320 in main ()
> No symbol table info available.
> (gdb) quit
> 
> The Ha

Interesting!  and not as expected :->

In the code, I can see where:

 11 - main()          calls bogomain()
 10 - bogomain()      calls bogofilter()
  9 - bogofilter()    calls collect_words()
  8 - collect_words() calls get_token()
  7 - get_token()     calls yylex()
  6 - yylex()         calls yyinput()

However, there's no place where yyinput() calls format_log_update().
The only place format_log_update() is called is from register_words()
in register.c.  Possibly it's an optimization issue.

You might try modifying CFLAGS in src/Makefile to remove optimization,
e.g. "-O2" (or whatever is set for your machine).  Then run:

  gdb bogofilter
  set args -s < _your_file_
  b format_log_update
  r
  where

With more debugging info (and less optimization) the results will be
more useful.

When I run "bogofilter -s" with a breakpoint at format_log_update, my
backtrace is:

(gdb) where
#0  format_log_update (buff=0x80754c0 "", size=256, _reg=0x806d0dc "", 
    _unreg=0x806d113 "s", _wrd=227, _msg=1) at format.c:440
#1  0x08055e48 in register_words (_run_type=REG_SPAM, h=0x807a390, msgcount=1)
    at register.c:60
#2  0x0804a2d5 in bogofilter (argc=0, argv=0xbffff720) at bogofilter.c:154
#3  0x0804bea4 in bogomain (argc=7, argv=0xbffff704) at bogomain.c:65
#4  0x0804a34b in main (argc=7, argv=0xbffff704) at main.c:30

HTH,

David