Re: [therion-users] Re: therion does a seg fault when I try and run it

[Michael Lake]

Wookey wrote in reply to Mikes question:
> > What suggestions now to debug this? I am keen to get this working on 
> > both PPC and Alpha. 
>
> Run it under strace to see where it actually dies. Look at the code giving
> the char/unsigned char warnings - that's very likely to break something and
> is suggestive of 'x86isms' in the code. 

I have one strace output as its small (trace1.txt, 3.5k) for 'therion -v'.
The other strace (trace2.txt , 100k) is up on my website and its from 
'therion' running in the therion supplied demo directory.
http://www.speleonics.com.au/mikes/trace2.txt

I havent used strace before but I see these errors:
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or 
directory)

I have /etc/ld.so.cache but no ld.so.preload

I see that here its writing the wrong string to output (stdout) 1 but 
the correct version number to output 3 (therion.log)

write(1, "therion gduxs:l:qLvhip:", 23) = 23
write(1, "\n", 1)                       = 1
write(3, "therion 0.2.15\n", 15)        = 15

and indeed therion.log does say "therion 0.2.15"

I presume its best to debug first the simple :therion -v" rather than 
the therion running the data set in demo.


Mike
--
Mike Lake
Caver, Linux enthusiast and interested in anything technical.

Trace on therion 
----------------

Done by: Mike Lake
Date: 30th Aug 2003
Architecture: PowerPC (Ti PowerBook G4)
Command line:
demo$ strace -o trace1.txt therion -v

Program Output

  demo$ therion -v
  therion gduxs:l:qLvhip:
  demo$ 

strace Output

execve("/usr/bin/therion", ["therion", "-v"], [/* 30 vars */]) = 0
uname({sys="Linux", node="casteret", ...}) = 0
brk(0)                                  = 0x100cdbf4
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x30014000
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(0x3, 0x7fffecd8)                = 0
mmap(NULL, 24012, PROT_READ, MAP_PRIVATE, 3, 0) = 0x30015000
close(3)                                = 0
open("/usr/lib/libstdc++-libc6.2-2.so.3", O_RDONLY) = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\2J\340"..., 1024) = 
1024
fstat64(0x3, 0x7fffece0)                = 0
mmap(0xff89000, 418356, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 3, 0) = 
0xff89000
mprotect(0xffd1000, 123444, PROT_NONE)  = 0
mmap(0xffd9000, 77824, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x40000) 
= 0xffd9000
mmap(0xffec000, 12852, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffec000
close(3)                                = 0
open("/lib/libm.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\0\232"..., 1024) = 
1024
fstat64(0x3, 0x7fffecc0)                = 0
mmap(0xfef2000, 551264, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xfef2000
mprotect(0xff2d000, 309600, PROT_NONE)  = 0
mmap(0xff32000, 290816, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 
0x30000) = 0xff32000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\2]\264"..., 1024) = 
1024
fstat64(0x3, 0x7fffeca0)                = 0
mmap(0xfd97000, 1353556, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0xfd97000
mprotect(0xfead000, 214868, PROT_NONE)  = 0
mmap(0xfeb7000, 155648, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 
0x110000) = 0xfeb7000
mmap(0xfedd000, 18260, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xfedd000
close(3)                                = 0
munmap(0x30015000, 24012)               = 0
brk(0)                                  = 0x100cdbf4
brk(0x100cdc1c)                         = 0x100cdc1c
brk(0x100ce000)                         = 0x100ce000
brk(0x100cf000)                         = 0x100cf000
brk(0x100d1000)                         = 0x100d1000
brk(0x100d3000)                         = 0x100d3000
brk(0x100d4000)                         = 0x100d4000
brk(0x100d6000)                         = 0x100d6000
brk(0x100d7000)                         = 0x100d7000
brk(0x100d8000)                         = 0x100d8000
brk(0x100d9000)                         = 0x100d9000
brk(0x100da000)                         = 0x100da000
brk(0x100db000)                         = 0x100db000
brk(0x100dd000)                         = 0x100dd000
time(NULL)                              = 1062299268
open("therion.log", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 3
fstat64(0x3, 0x7ffff138)                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x30015000
write(1, "therion gduxs:l:qLvhip:", 23) = 23
write(1, "\n", 1)                       = 1
write(3, "therion 0.2.15\n", 15)        = 15
close(3)                                = 0
munmap(0x30015000, 4096)                = 0
exit(0)                                 = ?