Imported Upstream version 3.8.0

Former-commit-id: 6a76a29bd07d86e57c6c8da45c65ed5447d38a61

mcs/errors/cs7007.cs

@@ -0,0 +1,9 @@
+// CS7007: `X' is not a static class. A using namespace directive can only be applied to static classes or namespace
+// Line: 5
+// Compiler options: -langversion:6
+
+using X;
+
+class X
+{
+}