From 7aa0d4aac3b43a193cc3428bef40ab328adaf7ac Mon Sep 17 00:00:00 2001
From: Eric Fiselier <eric@efcs.ca>
Date: Tue, 12 May 2015 22:37:23 +0000
Subject: [PATCH] Have '__have_extension(cxx_variadic_templates)' return true
 for any C++ standard.

llvm-svn: 237202
---
 clang/lib/Lex/PPMacroExpansion.cpp     | 1 +
 clang/test/Lexer/has_extension_cxx.cpp | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/clang/lib/Lex/PPMacroExpansion.cpp b/clang/lib/Lex/PPMacroExpansion.cpp
index 87a07a43d084..7121578c8fbc 100644
--- a/clang/lib/Lex/PPMacroExpansion.cpp
+++ b/clang/lib/Lex/PPMacroExpansion.cpp
@@ -1237,6 +1237,7 @@ static bool HasExtension(const Preprocessor &PP, const IdentifierInfo *II) {
            .Case("cxx_range_for", LangOpts.CPlusPlus)
            .Case("cxx_reference_qualified_functions", LangOpts.CPlusPlus)
            .Case("cxx_rvalue_references", LangOpts.CPlusPlus)
+           .Case("cxx_variadic_templates", LangOpts.CPlusPlus)
            // C++1y features supported by other languages as extensions.
            .Case("cxx_binary_literals", true)
            .Case("cxx_init_captures", LangOpts.CPlusPlus11)
diff --git a/clang/test/Lexer/has_extension_cxx.cpp b/clang/test/Lexer/has_extension_cxx.cpp
index d3483df94c5a..d1267eaf85d8 100644
--- a/clang/test/Lexer/has_extension_cxx.cpp
+++ b/clang/test/Lexer/has_extension_cxx.cpp
@@ -41,6 +41,11 @@ int has_reference_qualified_functions();
 int has_rvalue_references();
 #endif
 
+// CHECK: has_variadic_templates
+#if __has_extension(cxx_variadic_templates)
+int has_variadic_templates();
+#endif
+
 // CHECK: has_local_type_template_args
 #if __has_extension(cxx_local_type_template_args)
 int has_local_type_template_args();