[Issue 17927] [scope] scope input return value can be escaped

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17927

Walter Bright <bugzilla at digitalmars.com> changed:

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

--- Comment #5 from Walter Bright <bugzilla at digitalmars.com> ---
For the unittest, the `dup` does not create data with limited lifetime, so `s`
is not inferred as `scope`, and `escape` is free to escape it.

It's complicated, but the compiler is working as it is supposed to.

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