Visual Studio 2013 Edit and Continue not working

Question

With VS2013 Pro I am not able to use "Edit and Continue" when debugging an MFC program. I created a new MFC project to test.

OS is Windows 7 64-bit and I'm running Visual Studio 2013 12.0.30110.00 Update1.

Under Tools->Options->Debugging->Edit and Continue I have Enable Edit and Continue checked. I have unchecked it and checked it, but whenever I modify the code while debugging I get the following message:

The source file has changed. It no longer matches the version of the file used to build the application being debugged.

Basically I haven't changed any settings except for the tab sizes and I've set the keyboard mapping scheme to VC6.

What setting am I missing to enable edit and continue?

Answer 1

Edit and Continue is disabled for native code by default. To enable:

1. On the Tools menu, click Options.
2. In the Options dialog box, open the Debugging node, and select the Edit and Continue category.
3. In the Native-only options group, select Enable native Edit and Continue

Edit: Steps to test native Edit and Continue is working:

1. Start VS 2013
2. Create a new MFC project:
   • FILE->New Project->MFC Application->OK.
   • Select Finish on the MFC Application Wizard.
3. Build and start debugging:
   • BUILD->Build Solution
   • DEBUG->Start Debugging
4. Break into the program:
   • DEBUG->Break all
5. Make a code change:
   • Open OutputWnd.cpp and find COutputWnd::OnSize (Line 80)
   • Insert this line at the start of the function: cx = cx / 2;
6. Continue execution:
   • DEBUG->Continue
7. Resize the application window to see the effect of the code change on the Output pane at the bottom. Its width should be half the required size.

Answer 2

Edit and continue is also a Setting for each project.

1. It must be set in the compiler options under C++ -> General -> Debug Information Format: "Program Database for Edit And Continue (/ZI)"
2. Also the linker settings must be changed. The linker has to use incremental linking. Linker -> General -> Enable Incremental Linking = Yes or (for VC 2012 users) C++ -> All Options -> Enable Function-Level Linking = Yes (/Gy)

For more information read the MSDN.

Answer 3

The last hint helped, but we had to

set "Image Has Safe exception handlers" = NO(/SAFESEH:NO)

in all projects of our solution!

Answer 4

I did all steps described above, but nothing helps (thanks all for it).

My solution was:

Project -> Properties -> Linker -> Advanced:

set

"Image Has Safe exception handlers" = NO(/SAFESEH:NO)

Apply, Ok, and Rebuild project.

Hope it helps.