/in/foo.cc: In function 'int isprime(int)':
/in/foo.cc:22:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if(i<=sqrt(x))
     ^~
/in/foo.cc:24:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  return 1;
  ^~~~~~