foo.c:1:4: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    1 | foo.c:1:1: error: expected '=', ',', ';', 'asm' or '__attribute__' at end of input
      |    ^
foo.c:1:43: warning: multi-character character constant [-Wmultichar]
    1 | foo.c:1:1: error: expected '=', ',', ';', 'asm' or '__attribute__' at end of input
      |                                           ^~~~~
foo.c:1:52: warning: character constant too long for its type
    1 | foo.c:1:1: error: expected '=', ',', ';', 'asm' or '__attribute__' at end of input
      |                                                    ^~~~~~~~~~~~~~~

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