foo.cc: In function 'int main()':
foo.cc:21:9: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   21 |         else
      |         ^~~~
foo.cc:23:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   23 |                 return 0;
      |                 ^~~~~~

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