Debugging

Where did my memory go? -> Heaptrack

What corrupts my memory? -> Valgrind, Clang Memory Sanitizer, Clang Address Sanitizer, GCC Address Sanitizer

Are there race conditions*? -> Clang Thread Sanitizer

Why is my program so slow? -> Profiling

*: Yes, there are a lot in Voreen unfortunately. You can try to focus on your code or do the good thing of fixing the rest of Voreen.