From: Richard Smith <richard-llvm@metafoo.co.uk>
Date: Mon, 20 Mar 2017 20:12:48 +0000 (+0000)
Subject: Bump __cplusplus for C++17 to 201703L per the C++17 DIS.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=65ecf3afb2faf3d0598a6c742b81e7adec6b101b;p=clang

Bump __cplusplus for C++17 to 201703L per the C++17 DIS.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@298299 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index 749dd9b951..88be7732f5 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -374,9 +374,11 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
     else if (!LangOpts.GNUMode && LangOpts.Digraphs)
       Builder.defineMacro("__STDC_VERSION__", "199409L");
   } else {
-    // FIXME: Use correct value for C++17.
+    // C++17 [cpp.predefined]p1:
+    //   The name __cplusplus is defined to the value 201703L when compiling a
+    //   C++ translation unit.
     if (LangOpts.CPlusPlus1z)
-      Builder.defineMacro("__cplusplus", "201406L");
+      Builder.defineMacro("__cplusplus", "201703L");
     // C++1y [cpp.predefined]p1:
     //   The name __cplusplus is defined to the value 201402L when compiling a
     //   C++ translation unit.
diff --git a/test/Preprocessor/init.c b/test/Preprocessor/init.c
index f9f3b26218..14d487559a 100644
--- a/test/Preprocessor/init.c
+++ b/test/Preprocessor/init.c
@@ -15,7 +15,7 @@
 // CXX1Z:#define __GXX_EXPERIMENTAL_CXX0X__ 1
 // CXX1Z:#define __GXX_RTTI 1
 // CXX1Z:#define __GXX_WEAK__ 1
-// CXX1Z:#define __cplusplus 201406L
+// CXX1Z:#define __cplusplus 201703L
 // CXX1Z:#define __private_extern__ extern
 //
 //
@@ -115,7 +115,7 @@
 //
 // GXX1Z:#define __GNUG__ {{.*}}
 // GXX1Z:#define __GXX_WEAK__ 1
-// GXX1Z:#define __cplusplus 201406L
+// GXX1Z:#define __cplusplus 201703L
 // GXX1Z:#define __private_extern__ extern
 //
 //