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-rw-r--r--clang/lib/Frontend/InitPreprocessor.cpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 20bfbf1..162cc26 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -673,7 +673,11 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
// C++20 features.
if (LangOpts.CPlusPlus20) {
- //Builder.defineMacro("__cpp_aggregate_paren_init", "201902L");
+ // Builder.defineMacro("__cpp_aggregate_paren_init", "201902L");
+
+ // P0848 is implemented, but we're still waiting for other concepts
+ // issues to be addressed before bumping __cpp_concepts up to 202002L.
+ // Refer to the discussion of this at https://reviews.llvm.org/D128619.
Builder.defineMacro("__cpp_concepts", "201907L");
Builder.defineMacro("__cpp_conditional_explicit", "201806L");
//Builder.defineMacro("__cpp_consteval", "201811L");