foo.cc:1:1: error: stray '\345' in program
    1 | 嗯嗯
      | ^
foo.cc:1:2: error: stray '\227' in program
    1 | 嗯嗯
      |  ^
foo.cc:1:3: error: stray '\257' in program
    1 | 嗯嗯
      |   ^
foo.cc:1:4: error: stray '\345' in program
    1 | 嗯嗯
      |    ^
foo.cc:1:5: error: stray '\227' in program
    1 | 嗯嗯
      |     ^
foo.cc:1:6: error: stray '\257' in program
    1 | 嗯嗯
      |      ^

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