On Wednesday, 25 August 2021 at 12:11:01 UTC, Johann Lermer wrote:
```d
14 void main ()
15 {
16 auto ac = new Alias_Class;
17 Test_Struct ts = ac; // compiles
18 ac = ts; // compiles as well - why?
19
20 auto tc = new Test_Class;
21 ts = tc.ac; // compiles
22 tc.ac = ts; // again this compiles, but seg
faults
23 }
```
line 17: ac.ts is copied into main's ts
line 18: main's ts is copied back into ac.ts
You can confirm this by changing t, doing the copy, and then
checking t.
line 21: segfaults because tc.ac is null, and you're trying to
copy tc.ac.ts into main's ts
