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Summary

GCC and clang come with a set of sanitizers that attempt to find various common mistakes at runtime. Examples include out-of-bounds array indices, dangling pointers, unsafe concurrent access, division by zero... They are enabled using the -fsanitize compiler option; refer to the GCC manual for details. -fsanitize=address alone found several bugs in the various code bases I use.

We should provide instructions how to enable them to encourage their use, and maybe eventually run CI tests with sanitizers enabled.