#include int main() { int a[3][3] = {{0,1,2}, {3,4,5}, {6,7,8}}; $mem m = &a[1 .. 2][0 .. 1]; $mem_havoc(m); $assert(a[0][0] == 0); $assert(a[0][1] == 1); $assert(a[0][2] == 2); $assert(a[1][2] == 5); $assert(a[2][2] == 8); }