5 sysctl debug.redzone.malloc_underflow=1
6 sysctl debug.redzone.malloc_overflow=1
7 sysctl debug.redzone.realloc_smaller_underflow=1
8 sysctl debug.redzone.realloc_smaller_overflow=1
9 sysctl debug.redzone.realloc_bigger_underflow=1
10 sysctl debug.redzone.realloc_bigger_overflow=1