foo.cc: In function ‘bool s(int)’:
foo.cc:7:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
    7 |         for(int i=2;i*i<=n;i++)
      |         ^~~
foo.cc:9:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
    9 |                 return true;
      |                 ^~~~~~