unexpected exit


 
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Operating Systems HP-UX unexpected exit
# 1  
Old 07-22-2004
unexpected exit

On top of that, there is another question met on HP-UX 11i v2. The running program exit unnormally and no coredump. I used the 'gdb' tool to debug , it exit and return the message:
(gdb)
ttrace wait: No child processes.

When using 'where' to find the breakpoint, it retruned the following messages:
(gdb) where
warning: reading register 324: Permission denied
warning: reading register 584: Permission denied
warning: reading register 585: Permission denied
warning: reading register 473: Permission denied
#0 0x0 in <unknown_procedure> ()
warning: reading register 584: Permission denied
warning: Attempting to unwind past bad PC 0x0
warning: reading register 332: Permission denied
warning: reading register 448: Permission denied
warning: reading register 520: Permission denied
#1 0x0 in <unknown_procedure> ()


In the program, I used the 'SYS V semphore' and POSIX 'shared memory' mechanism. The code is too long and the program is a part of our system, we are porting them to HP-UX, this error report never meet on the other OS(AIX, Solaris,True64).

Anyone met and solve it? Thanks.
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GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME
gzexe - compress executable files in place SYNOPSIS
gzexe name ... DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files: -rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb -rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~ /usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are sure that /usr/bin/gdb works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail). BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. GZEXE(1)