How Do I Enable Bound Checking in the GCC STL?

Implementing Bound Checks in GCC STL

When utilizing operator[] or iterators in the GCC STL (Standard Template Library), runtime bound checking is a valuable tool for detecting array and container boundary violations.

Enabling Bound Checking

To activate bound checking, compile your code with the -D_GLIBCXX_DEBUG flag.

g++ -D_GLIBCXX_DEBUG ...

Alternatives for Random-Access Containers

In addition to operator[], random-access containers (e.g., vectors) provide the at() operation, which inherently performs bounds checking. It's worth considering using at() in these cases for enhanced safety.

Additional Resources

• GCC STL Debug Mode: https://gcc.gnu.org/onlinedocs/libstdc /manual/debug_mode_using.html#debug_mode.using.mode
• at() Operation: https://en.cppreference.com/w/cpp/container/vector/at

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