[Issue 15882] writeln on a bad dstring triggering assert(0) in std.utf.toUTF8

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15882

ag0aep6g at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |ag0aep6g at gmail.com

--- Comment #1 from ag0aep6g at gmail.com ---
What do you suggest to be fixed/improved here? As you say, the dstring is
invalid, so it seems correct that the assert fails.

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