[clang] [HLSL] Disallow virtual inheritance and functions (PR #127346)

[Sarah Spall via cfe-commits]

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@@ -1817,5 +1817,9 @@ def ext_hlsl_access_specifiers : ExtWarn<
   InGroup<HLSLExtension>;
 def err_hlsl_unsupported_component : Error<"invalid component '%0' used; expected 'x', 'y', 'z', or 'w'">;
 def err_hlsl_packoffset_invalid_reg : Error<"invalid resource class specifier '%0' for packoffset, expected 'c'">;
+def err_hlsl_virtual_function
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spall wrote:

could you make this 1 diagnostic with a selector?

https://github.com/llvm/llvm-project/pull/127346