[Issue 18104] New: Alias example compiles where it states that it should be illegal

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18104

          Issue ID: 18104
           Summary: Alias example compiles where it states that it should
                    be illegal
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: trivial
          Priority: P1
         Component: dlang.org
          Assignee: nobody at puremagic.com
          Reporter: michael at toohuman.io

Thread located here:
https://forum.dlang.org/thread/oucxcxaepcjgnmbetbll@forum.dlang.org

This thread is referring to an example used in the documentation regarding
Alias, specifically, the last example:

Aliases cannot be used for expressions:

struct S { static int i; }
S s;

alias a = s.i; // illegal, s.i is an expression
alias b = S.i; // ok
b = 4;         // sets S.i to 4

This code compiles fine, most likely related to i being a static member, you
can go on to change i through a or b. The following example indicates where an
error occurs:

import std.stdio;

struct S
{
    static int i;
    int j;
}

S s;

void main(string[] args)
{
    alias a = s.i;
    a = 1;          // OK
    alias b = S.i;
    b = 2;          // OK
    alias c = s.j;
    c = 3;          // Error: need 'this' for 'j' of type 'int'
    alias d = S.j;
    d = 4;          // Error: need 'this' for 'j' of type 'int'
}

Using DMD64 D Compiler v2.077.1

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