How to locate Perl program line that caused coredump?

[Philip Chan_1]

Hi,

One of our Perl program went into coredump. Can someone please tell me the ways to determine which line from within the program caused that?

Thanks
Philip

[Steven Sim Kok Leong]

Hi,

Have you tried:
1) #!/usr/local/bin/perl -w
2) Inserting "print STDOUT" statements inside your perl program

Hope this helps. Regards.

Steven Sim Kok Leong
Brainbench MVP for Unix Admin
http://www.brainbench.com

[Philip Chan_1]

Hi Steve,

The Perl program runs on production environment therefore adding print statements isn't preferred. It may as well generate too much warnings if the -w flag is on. The most difficult part of this problem is that it seems intermittent, which only occurs once every few months. Diagnostic would be a lot easier if the program line that caused the coredump can be located.

Rgds,
Philip

[Vincenzo Restuccia]

#file core
#what core
#strings core|more

[Greg Royle]

maybe you can use gdb (debugger) in conjunction with the perl interpreter to try and find out why and where it is aborting.

[Eduardo Uribe_1]

Use gdb to locate it.

[Eduardo Uribe_1]

Use gdb to locate it.
gdb program
(gdb) run [parameters]
It will run the program and will tell you when it's breaking.
(gdb) quit

Grato!