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-rw-r--r--clang/lib/Frontend/InitPreprocessor.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 17b9ca7..8e62461 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -763,6 +763,7 @@ 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_deleted_function", "202403L");
if (LangOpts.Char8)