[Issue 17654] return value incorrectly considered unique when casting to another pointer type

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17654

Steven Schveighoffer <schveiguy at yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |schveiguy at yahoo.com

--- Comment #1 from Steven Schveighoffer <schveiguy at yahoo.com> ---
I actually think it's a design problem. assumeUTF is marked pure. The input is
ubyte and the output is char. This means the compiler can reasonably assume the
output is unrelated to the input and therefore unique. 

This is quite a pickle. We can't very well unmark it pure, and I think the
compiler logic is sound.

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