[Issue 12676] alias parameter attempts to interpret symbol

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12676

--- Comment #2 from Andrej Mitrovic <andrej.mitrov...@gmail.com> ---
Here:

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class C { }
class D : C { }

template TemplAlias(
    alias x : D = C
) { }
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For some reason in the parser isDeclaration() returns false for ": Type", but
true for "= Type", and either a parseType() or a parseCondExp() is taken.Later
in in the semantic phase the alias class tries to evaluate D as an expression
rather than as a type so it fails.

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