/in/foo.cc: In function 'int main()':
/in/foo.cc:29:2: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
  while(!hash[a%b]);
  ^~~~~
/in/foo.cc:30:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
  {
  ^