Comment by pjmlp

The wonders of C:

- NULL pointer dereferences,

- Invalid pointer arithmetic leading to SIGSEGV due to unmapped memory access,

- Out-of-bounds reads and writes to stack, heap and static-based arrays,

- Invalid free() calls,

- Double free() calls over the same pointer,

- Division errors,

- Assertion failures,

- Use of uninitialized memory.

But hey, any good programmer always writes perfect C code.