pub unsafe extern "C" fn ucnv_getSubstChars_77(
converter: *const UConverter,
subChars: *mut c_char,
len: *mut i8,
err: *mut UErrorCode,
)pub unsafe extern "C" fn ucnv_getSubstChars_77(
converter: *const UConverter,
subChars: *mut c_char,
len: *mut i8,
err: *mut UErrorCode,
)