argument_must_be_native
Argument to 'Native.addressOf' must be annotated with @Native
Description
#The analyzer produces this diagnostic when the argument passed to Native.addressOf
isn't annotated with the Native
annotation.
Examples
#The following code produces this diagnostic because the argument to addressOf
is a string, not a field, and strings can't be annotated:
import 'dart:ffi';
@Native<Void Function()>()
external void f();
void g() {
print(Native.addressOf('f'));
}
The following code produces this diagnostic because the function f
is being passed to addressOf
but isn't annotated as being Native
:
import 'dart:ffi';
external void f();
void g() {
print(Native.addressOf<NativeFunction<Void Function()>>(f));
}
Common fixes
#If the argument isn't either a field or a function, then replace the argument with a field or function that's annotated with Native
:
import 'dart:ffi';
@Native<Void Function()>()
external void f();
void g() {
print(Native.addressOf<NativeFunction<Void Function()>>(f));
}
If the argument is either a field or a function, then annotate the field of function with Native
:
import 'dart:ffi';
@Native<Void Function()>()
external void f();
void g() {
print(Native.addressOf<NativeFunction<Void Function()>>(f));
}
Unless stated otherwise, the documentation on this site reflects Dart 3.7.3. Page last updated on 2025-05-08. View source or report an issue.