[clang] [clang-cl] [Sema] Support MSVC non-const lvalue to user-defined temporary reference (PR #99833)

[via cfe-commits]

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@@ -3034,6 +3034,12 @@ def fms_extensions : Flag<["-"], "fms-extensions">, Group<f_Group>,
   Visibility<[ClangOption, CC1Option, CLOption]>,
   HelpText<"Accept some non-standard constructs supported by the Microsoft compiler">,
   MarshallingInfoFlag<LangOpts<"MicrosoftExt">>, ImpliedByAnyOf<[fms_compatibility.KeyPath]>;
+def fms_reference_binding : Flag<["-"], "fms-reference-binding">, Group<f_Group>,
+  Visibility<[ClangOption, CC1Option, CLOption]>,
+  HelpText<"Accept expressions that bind a non-const lvalue reference to a user-defined type temporary as supported by the Microsoft Compiler">,
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zmodem wrote:

s/Compiler/compiler/

I know the file is not consistent, but historically it's been trying to stay within 80 columns, so consider breaking up the HelpText (also below). See e.g. fms_compatibility_version for an example.

https://github.com/llvm/llvm-project/pull/99833