Function copperlace_processor_result_set_error 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn copperlace_processor_result_set_error(
    result: *mut CopperlaceProcessorResult,
    message: *const c_char,
) -> c_int

Sets the error for a custom processor callback result.

Safety

result must be the valid result handle passed to the active processor callback. message must point to a valid NUL-terminated UTF-8 string.