foo.cc: In function 'int main()':
foo.cc:18:5: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   18 |     else
      |     ^~~~
foo.cc:20:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   20 |  return 0;
      |  ^~~~~~

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