foo.cc: In function 'int WS(long long unsigned int)':
foo.cc:15:9: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
   15 |  return m;
      |         ^
foo.cc: In function 'int main()':
foo.cc:13:3: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
   13 |  m++;
      |  ~^~
foo.cc:10:6: note: 'm' was declared here
   10 |  int m;
      |      ^

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