Question:
How to get custom debug configurations to work?
Answer:
This can be fix in CCES settings as below:
1) Click on the Window->Preferences menu to bring up the Preferences dialog
2) Click on C/C++->Indexer
3) In the "Build configuration for the indexer" group, select "Use active build configuration"
4) Click OK to close the Preferences dialog
5) In the Project Explorer view, right click on the project and select Build Configurations->Set Active->Debug_New (if 'Debug_New' is already selected active, you need to set any other configurations first and then select and set active for Debug_New)