And when you see a heisenbug in MSVC++, just rebuild your project. I don't know about newer versions, but VS 2010 and priors have a nasty trait of spitting out

And when you see a heisenbug in MSVC++, just rebuild your project. I don't know about newer versions, but VS 2010 and priors have a nasty trait of spitting out wrong binary code now and then even when all optimizations off, edit-and-continue and incremental linking disabled. You would just make a little change, build, launch and get a crash in the middle of nowhere with the most bizarre stack trace. Then rebuild it and it will magically go back to normal. For a project of 100k lines this is a weekly, sometimes daily, routine. Very trust inspiring.