In the case of software source code, it would be debugging. Note the difference in the given examples between de´bugging (source) CODE, or a software routine (debugging tool) either embedded or Offline called DEBUGGING code, again used to debug code.

Microsoft® Visual Basic® for Applications (VBA) provides several debugging tools that help analyze how code operates and help locate errors in your code.
Writing and debugging code by voice -- a proof of concept. Here is an example of writing and debugging a Java program, from beginning to end, using speech
Analyzing and Debugging Code. The Link for Code Composer Studio provides
so that you can switch your debugging code on and off easily. ... Note that you can remove all this debugging code from your executable by adding
... In Java, debugging code is put within an if...else block as shown below. ... attribute provides a much cleaner way of writing debugging code. ...
Most of the standard UM procedures for debugging code apply equally well to ...
This application note shows how you can debug your code banking programs using the Keil 8051 monitor. ...
... A further problem in Keykos is that the programmer who is debugging code ... and that a programmer can ignore such barriers while debugging the code.

http://www.google.com search debugging +code