From 5607dfb48a7dbc53c358527df8d5f2173af92f26 Mon Sep 17 00:00:00 2001
From: Thomas Braun <thomas.braun@byte-physics.de>
Date: Wed, 23 Oct 2019 14:07:19 +0200
Subject: [PATCH] appveyor.yml: Compile and test with latest version for
 __cplusplus macro on MSVC

According to [1] the C++ macro __cplusplus has always the value 199711L
even if you enable later version of C++ support via /std.

Use one job with /Zc:__cplusplus defined so that we know that it
compiles.

[1]: https://docs.microsoft.com/en-us/cpp/build/reference/zc-cplusplus?view=vs-2019
---
 appveyor.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appveyor.yml b/appveyor.yml
index 9ee5d9a3..b1bdf43f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -85,7 +85,7 @@ environment:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       configuration: Release
       platform: x64
-      CXX_FLAGS: "/permissive- /std:c++latest /utf-8 /F4000000"
+      CXX_FLAGS: "/permissive- /std:c++latest /Zc:__cplusplus /utf-8 /F4000000"
       LINKER_FLAGS: "/STACK:4000000"
       GENERATOR: Visual Studio 15 2017