Parse failed when declare function signature in preprocess_if

[QthCN]

C codes:

#ifndef LTC_CLEAN_STACK
static ulong32 _g_func(ulong32 x)
#else
static ulong32 g_func(ulong32 x)
#endif
{

}

tree-sitter parse output:

(translation_unit [1, 0] - [9, 0]
  (preproc_ifdef [1, 0] - [5, 6]
    name: (identifier [1, 8] - [1, 23])
    (declaration [2, 0] - [2, 33]
      (storage_class_specifier [2, 0] - [2, 6])
      type: (type_identifier [2, 7] - [2, 14])
      declarator: (function_declarator [2, 15] - [2, 33]
        declarator: (identifier [2, 15] - [2, 22])
        parameters: (parameter_list [2, 22] - [2, 33]
          (parameter_declaration [2, 23] - [2, 32]
            type: (type_identifier [2, 23] - [2, 30])
            declarator: (identifier [2, 31] - [2, 32])))))
    alternative: (preproc_else [3, 0] - [4, 32]
      (declaration [4, 0] - [4, 32]
        (storage_class_specifier [4, 0] - [4, 6])
        type: (type_identifier [4, 7] - [4, 14])
        declarator: (function_declarator [4, 15] - [4, 32]
          declarator: (identifier [4, 15] - [4, 21])
          parameters: (parameter_list [4, 21] - [4, 32]
            (parameter_declaration [4, 22] - [4, 31]
              type: (type_identifier [4, 22] - [4, 29])
              declarator: (identifier [4, 30] - [4, 31])))))))
  (compound_statement [6, 0] - [8, 1]))
/tmp/aa.c	0 ms	(MISSING ";" [2, 33] - [2, 33])