[clang] [clang-tools-extra] [Clang][C++29] Template pack indexing (PR #218738)

[Corentin Jabot via cfe-commits]

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@@ -761,7 +761,7 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
   Builder.defineMacro("__cpp_placeholder_variables", "202306L");
 
   // C++26 features supported in earlier language modes.
-  Builder.defineMacro("__cpp_pack_indexing", "202311L");
+  Builder.defineMacro("__cpp_pack_indexing", "202606L");
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cor3ntin wrote:

I think that's reasonable - maybe we can wait a bit, and wait to be done with mangling?

https://github.com/llvm/llvm-project/pull/218738