pub unsafe extern "C" fn weld_error_message(err: weld_error_t) -> *const c_char {
    let err = err as *mut weld::WeldError;
    let err = &*err;
    err.message().as_ptr()
}
Returns a Weld error message.

This function is a wrapper for `WeldError::message`.
weld-capi/src/lib.rs