Unexpected result with -betterC

[Paul Backus]

On Sunday, 3 November 2024 at 19:00:33 UTC, DLearner wrote:
> However, the docs say dynamic arrays are not allowed with 
> betterC, and 'string' implies a dynamic array.
> So I expected DMD to complain that my code was invalid.
>
> Any ideas?

The docs are wrong. Dynamic arrays themselves are allowed; you're 
just not allowed to perform any *operations* on them that would 
cause memory allocation.

This includes, for example,

- concatenating two dynamic arrays with the `~` operator.
- appending to a dynamic array with the `~=` operator.
- extending a dynamic array by assigning to its `.length` 
property.
- copying a dynamic array using the built-in `.dup` method.