Compiler Error C3151

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'type' cannot apply __gc or __value to a template

A language keyword was applied to a template class, which is not allowed.

C3151 is only reachable using /clr:oldSyntax.

The following sample generates C3151:

// C3151.cpp
// compile with: /clr:oldSyntax /c
template <class T> __gc class X {};   // C3151
template <class T> class Y {};   // OK