foo.cc: In function 'int main()':
foo.cc:8:21: warning: iteration 100001 invokes undefined behavior [-Waggressive-loop-optimizations]
    8 |                 b[i]=true;
      |                 ~~~~^~~~~
foo.cc:7:23: note: within this loop
    7 |         for(int i=0; i<=100001; i++)
      |                      ~^~~~~~~~
foo.cc:8:21: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset 100001 is out of the bounds [0, 100001] of object 'b' with type 'bool [100001]' [-Warray-bounds]
    8 |                 b[i]=true;
      |                 ~~~~^~~~~
foo.cc:4:6: note: 'b' declared here
    4 | bool b[100001];
      |      ^

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