[Issue 24780] New: Errors in Using "alias this = arr" within a Class

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24780

          Issue ID: 24780
           Summary: Errors in Using "alias this = arr" within a Class
           Product: D
           Version: D2
          Hardware: x86_64
                OS: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: mzfhhhh at foxmail.com

Errors in Using alias this = arr within a Class

```d
class A
{
    int [] arr;
    alias arr this; 
}

void main()
{
    A a = new A;
    a ~= 1;  
    writeln(a); // output: [1]
    writeln(a); // output err: []
}
```

When attempting to print the value of variable a for the second time, an error
occurs, and the result is an empty array [].

--