[Issue 12420] [AA] Can't set associative array with array as key value using key type

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12420

Denis Shelomovskij <verylonglogin.reg at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |---

--- Comment #6 from Denis Shelomovskij <verylonglogin.reg at gmail.com> ---
(In reply to Kenji Hara from comment #5)
> In D, AA requires immutability for the key.

Not now. Currently it just adds `const` qualifier. This is another Issue 12491.

> Anyway in D AA types cannot have mutable key. Therefore this issue should be
> marked as invalid.

This issue should not be marked as invalid as it results in such nonsense
compiler behaviour as `char[]` is implicitly convertible to `const char[]`:
---
void main()
{
    int[char[]] aa;
    auto c1 = new char[1];
    aa[c1] = 5; // error
    const c2 = c1;
    aa[c2] = 5; // ok
}
---

--