[Issue 15712] extern(C) attribute inside extern(C) unittest is incorrectly ignored

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15712

Dennis <dkorpel at live.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|extern(C) cancelling itself |extern(C) attribute inside
                   |out                         |extern(C) unittest is
                   |                            |incorrectly ignored

--- Comment #8 from Dennis <dkorpel at live.nl> ---
It turns out the parser doesn't generate an AttributeDeclaration for
extern(linkage) when it thinks it's redundant, but it's not aware that during
semantic analysis, unittests are set to extern(D).

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