/in/foo.cc: In function 'int main()':
/in/foo.cc:13:11: warning: division by zero [-Wdiv-by-zero]
         1 / 0;
         ~~^~~
/in/foo.cc:13:11: warning: statement has no effect [-Wunused-value]
/in/foo.cc:21:15: warning: unused variable 'p' [-Wunused-variable]
         auto *p = new int[20000000000000];
               ^