[PATCH] D101766: [TableGen] [Clang] Clean up Options.td and add asserts

[Paul C. Anagnostopoulos via Phabricator via cfe-commits]

Paul-C-Anagnostopoulos added inline comments.


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Comment at: clang/include/clang/Driver/Options.td:1089
+  LangOpts<"DoubleSquareBracketAttributes">,
+  Default<!strconcat(cpp11.KeyPath, "||", c2x.KeyPath)>,
   PosFlag<SetTrue, [], "Enable">, NegFlag<SetFalse, [], "Disable">,
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jansvoboda11 wrote:
> Were you planning to refactor this too?
You can't use the paste operator (#) there because c2x is a defvar. Defvars and undefined identifiers are taken literally by paste, due to its frequent use in forming record and class names.

This behavior is noted in the Programmer's Reference, but I think I will add a more prominent note. I wonder if we should change the behavior so defvars are treated normally.


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https://reviews.llvm.org/D101766