If a build was triggered by a code change, the updated files will be listed in the build result.
To view the code changes that triggered a particular build result:
Links to individual source-code files will only be available if your Bamboo administrator has specified a Web Repository in the 'Advanced Options' for a repository on the 'Source Repositories' tab of the Plan. For details, please see Specifying the Source Repository for a Plan.
If you are using Atlassian's FishEye with Bamboo, you will be able to view the source code, version history and 'diff' comparison for the file in FishEye using the links described above.
Your Bamboo administrator needs to have specified the URL of your FishEye project, as described below.
To integrate Bamboo with FishEye:
Screenshot: Specifying a FishEye project in Bamboo
Related Documentation
Triggering a Plan Build
Specifying the Source Repository for a Plan