foo.cc: In function 'int isPrime(int)':
foo.cc:6:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    6 |  for(int i=2;i<=int(sqrt(x));i++)
      |  ^~~
foo.cc:8:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
    8 |    return 1;
      |    ^~~~~~

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