Test case:


using GLib;

public class NoFields {
	public void do_something() {
		stdout.printf("hello\n");
	}

	public static int main(string[] args) {
		new NoFields().do_something();
		return 0;
	}
}

Expected:
"hello"

Actual:
** (process:9592): CRITICAL **: no_fields_do_something: assertion `self != NULL' failed

The problem is that sizeof(NoFields) == 0, so g_slice_new0 returns NULL.

Possible solution: add a dummy char field to struct in code generation if the struct has no other fields.