Memory leak in OpenCV 4.20

[Laurent]

Memory leaks compiling C++ MFC App in debug mode

Strategic Leak Avoidance: Handling OpenCV Memory Leaks in MFC I am posting this in 2026 for anyone struggling with this issue. After trying various methods, I’ve found that the most effective approach is Strategic Leak Avoidance. The Root Cause In MFC, these “leaks” often occur because OpenCV utilizes global memory pools or thread managers (like TBB/OpenMP) for performance optimization. These components are typically cleaned up only when the program is fully unloaded from memory (DLL Unload). B…