[Issue 6449] Unused label warning

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=6449

Mathias LANG <pro.mathias.lang at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |pro.mathias.lang at gmail.com
         Resolution|---                         |WONTFIX

--- Comment #1 from Mathias LANG <pro.mathias.lang at gmail.com> ---
The consensus nowadays is that this kind of checks should belong to a linter.
While those warnings can be useful to spot mistypes, they also bring a lot of
false positive with them, which usually makes development harder.

3960 has a great amount of discussion and is WONTFIX, so I'm going to follow
the same route here.

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