" Core" not in executable format: File format not recognized - HP Itanium

[Adarsh Thampan]

Hi ,

I see the following error when I try to debug a core file into gdb.

# gdb core
HP gdb 6.1 for HP Itanium (32 or 64 bit) and target HP-UX 11iv2 and 11iv3.
Copyright 1986 - 2009 Free Software Foundation, Inc.
Hewlett-Packard Wildebeest 6.1 (based on GDB) is covered by the
GNU General Public License. Type "show copying" to see the conditions to
change it and/or distribute copies. Type "show warranty" for warranty/support.
.."/core": not in executable format: File format not recognized

I have attached the elfdump output of core file as well .

[Dennis Handly]

A corefile is useless without the executable and every shlib that is used.
$ gdb executable core

If you need to move to another machine, the gdb packcore command can help.

[Adarsh Thampan]

Thanks that did help.


I run my program pr0sign and it crashes , when I check the core file , I find that the trigger of the crash happens at

#27 0x60000000d5830a70:0 in RtEventLog::Initialize (this=0x7fff2d00)
at ./RtEvtLog.CPP:1109

Now I run the program pr0sign in gdb , and try to set a brek point at the above point .

/users/yadvecha/ISLHPIA02/RTWIN/720/Source/HPIA23DebugUni> gdb pr0sign
HP gdb 6.1 for HP Itanium (32 or 64 bit) and target HP-UX 11iv2 and 11iv3.
Copyright 1986 - 2009 Free Software Foundation, Inc.
Hewlett-Packard Wildebeest 6.1 (based on GDB) is covered by the
GNU General Public License. Type "show copying" to see the conditions to
change it and/or distribute copies. Type "show warranty" for warranty/support.
..
(gdb) break main
Breakpoint 1 at 0x4011a90:1: file /users/mainsoft-v52-orig/mw/MainWin.C, line 319 from /home/yadvecha/ISLHPIA02/RTWIN/720/Source/HPIA23DebugUni/pr0sign.
(gdb) break /users/yadvecha/ISLHPIA02/RTWIN/720/Source/RTEVTLOG.CPP:1109
Breakpoint 2 (deferred) at "/users/yadvecha/ISLHPIA02/RTWIN/720/Source/RTEVTLOG.CPP:1109" ("/users/yadvecha/ISLHPIA02/RTWIN/720/Source/RTEVTLOG.CPP:1109" was not found).
Breakpoint deferred until a shared library containing "/users/yadvecha/ISLHPIA02/RTWIN/720/Source/RTEVTLOG.CPP:1109" is loaded.


Why does it show the above message ( unable to set breakpoint & defer it) , why am I unable to set the breakpoint 2 ?

Also If i run the gdb , it never stops at the breakpoint mentioned above.

Thanks.

[Dennis Handly]

>I find that the trigger of the crash happens at
#27 0x60000000d5830a70:0 in RtEventLog::Initialize ./RtEvtLog.CPP:1109

This is the statement after the call. You could set a breakpoint at the beginning of RtEventLog::Initialize and then step through it.
Or set a breakpoint just before the call:
b * 0x60000000d5830a70-16

>Why does it show the above message, why am I unable to set the breakpoint 2?

Because it never returns from that call?

Why do you think stopping in RtEventLog::Initialize will help? You want to step through all 27 frames to see where it goes wrong?
You can use the frame command to look at locals after the abort.

[Dennis Handly]

>Thanks that did help.

If you are happy with the answers you got, please read the following about assigning points:
http://forums.itrc.hp.com/service/forums/helptips.do?#33
http://forums.itrc.hp.com/service/forums/pageList.do?userId=WW387958&listType=unassigned