Debugging Core Files Using HP WDB (5900-1573; WDB 6.2; January 2011)

$ aCC a.c

$ /opt/langtools/bin/gdb ./a.out core

HP gdb for HP Itanium (32 or 64 bit) and target HP-UX 11.2x.

Hewlett-Packard Wildebeest (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 was generated by `a.out'.

Program terminated with signal 11, Segmentation fault.

SEGV_ACCERR - Invalid Permissions for object

#0 0x40009b0:1 in generate_core_dump () at a.c:10

10 *(int*)i = 10;

(gdb) bt

#0 0x40009b0:1 in generate_core_dump () at a.c:10

#1 0x4000b40:0 in foo () at a.c:30

#2 0x4000bd0:0 in main () at a.c:37

(gdb) p local_j

No symbol "local_j" in current context.

(gdb)

In the case of core files created by PA-RISC - based binaries, the source line information

is not available if the binary has not been compiled with the -g option. The information

about the arguments and the local variables is not displayed.

In the case of core files created by Itanium-based binaries, the source line information

is available, irrespective of whether the binary is compiled with the -g option, or not.

Sample Debugging Session 3

Debugging a Core File Created by a Stripped Binary When the Symbol Table is Not

Available

Debugging Core Files Created by Optimized or Stripped Binaries 23