[clang] bd1bb8c - [Clang] define __cpp_named_character_escapes

[Roy Jacobson via cfe-commits]

Author: Roy Jacobson
Date: 2022-09-30T11:13:18+03:00
New Revision: bd1bb8cd42548d5e50e84f52a5098eec1ee92c98

URL: https://github.com/llvm/llvm-project/commit/bd1bb8cd42548d5e50e84f52a5098eec1ee92c98
DIFF: https://github.com/llvm/llvm-project/commit/bd1bb8cd42548d5e50e84f52a5098eec1ee92c98.diff

LOG: [Clang] define __cpp_named_character_escapes

Define the feature test macro for named character escapes.
I assume this was not done because it was implemented before formally accepted, right? cxx_status says the paper is implemented.

Reviewed By: cor3ntin

Differential Revision: https://reviews.llvm.org/D134898

Added: 
    

Modified: 
    clang/lib/Frontend/InitPreprocessor.cpp
    clang/test/Lexer/cxx-features.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 04ebeea522d65..e9bfab9e695be 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -697,10 +697,11 @@ static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
     Builder.defineMacro("__cpp_multidimensional_subscript", "202110L");
   }
 
-  // We provide this as an extension in earlier language modes, so we
-  // also define the macro.
+  // We provide those C++2b features as extensions in earlier language modes, so
+  // we also define their feature test macros.
   if (LangOpts.CPlusPlus11)
     Builder.defineMacro("__cpp_static_call_operator", "202207L");
+  Builder.defineMacro("__cpp_named_character_escapes", "202207L");
 
   if (LangOpts.Char8)
     Builder.defineMacro("__cpp_char8_t", "201811L");

diff  --git a/clang/test/Lexer/cxx-features.cpp b/clang/test/Lexer/cxx-features.cpp
index d1c9f0d2b2aee..ee52017a2201e 100644
--- a/clang/test/Lexer/cxx-features.cpp
+++ b/clang/test/Lexer/cxx-features.cpp
@@ -51,7 +51,7 @@
 #error "wrong value for __cpp_static_call_operator"
 #endif
 
-#if check(named_character_escapes, 0, 0, 0, 0, 0, 0)
+#if check(named_character_escapes, 202207, 202207, 202207, 202207, 202207, 202207)
 #error "wrong value for __cpp_named_character_escapes"
 #endif