Depending on which STL you use, there may also be assertions you can enable, e.g. via defining _GLIBCXX_ASSERTIONS https://gcc.gnu.org/onlinedocs/libstdc++/man

Depending on which STL you use, there may also be assertions you can enable, e.g. via defining _GLIBCXX_ASSERTIONS https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_macros.html https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_macros...