[ynik]

Codegen bugs are not particularly rare either; but you usually run into them if doing "weird stuff" (which hits an edge case somewhere within the compiler). And the first instinct of most C++ programmers when seeing weird compiler behavior is to assume their weird code somehow triggered undefined behavior, so they refactor their program until it's less weird. But then it usually also no longer hits the edge case in the compiler's logic, so the program starts working correctly. Most developers then don't spend additional hours/days to investigate whether it was truly undefined behavior or if they hit a compiler bug.