foo.cc: In function 'int main()':
foo.cc:9:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    9 |     for (int i = 0; i < n; i++)
      |     ^~~
foo.cc:11:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   11 |         int flag = 0;
      |         ^~~

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