debug data

Information the compiler gathers about your code when you compile with the -g debug option. The compiler includes debugging information in the resulting object file. Purify uses the debug data to report source line numbers, source filenames, and local variable names in Purify messages. Without debug data, Purify can report only function names and object file names.

If you use the debug option, Purify provides line number information in the Viewer. The button is displayed at the beginning of the function name lines when a source file and line number are available. If line number information is not available, Purify reports only function and filename information.

Do not use Purify to instrument files that were compiled with both -g and -O at the same time.

Note:

• On IRIX and Tru64 UNIX, system libraries retain their source file and line number information. For this reason, the button might appear next to a system library function whose source file is not available. When you click the button for such a line, Purify asks you for the location of the source file. Enter the location of the file if you know it, then click OK to expand the line.