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however, may not find source files if the object files are
not available.
This minimizes or eliminates the need to specify multiple
objectdir commands when object files are moved from
the compilation directories or when compilation
directories are mounted over NFS.
To use this feature, the program must be compiled with
the +objdebug option. For information on how pathmap
works type help pathmap at the HP WDB prompt.
If the debugger cannot find the source files, perform the following steps:
1. Make certain the files were compiled with the -g switch. Type info sources to nd
the list of files that the debugger knows were compiled with -g.
2. Make certain that the debugger can find the source file. Type show dir to find
the list of directories the debugger uses to search for source files and type set
dir to change that path.
On HP-UX, the debug information does not contain the full path name to the source
file, only the relative path name that was recorded at compile time. Consequently,
you may need several dir commands for a complex application with multiple
source directories. One way to do this is to place them in a .gdbinit file placed
in the directory used to debug the application.
A sample of the .gdbinit file might look like the following:
dir /home/fred/appx/system
dir /home/fred/appx/display
dir /home/fred/appx/actor
dir /home/fred/appx/actor/sys
...
When you compile the program with the +objdebug option, the debugger may
nd the source files without using the dir command. This happens because the
debugger stores the full path name to the object files and searches for source files
in the same directories.
14.7 Fix and continue debugging
Fix and continue enables you to see the result of changes you make to a program you
are debugging without having to re-compile and re-link the entire program.
For example, you can edit a function and use the fix command, which automatically
re-compiles the code, links it into a shared library, and continues execution of the
program, without leaving the debugger.
With Fix and Continue, you can experiment with various ways of fixing problems until
you are satisfied with the correction, before you exit the debugger.
14.7 Fix and continue debugging 145