From 8c2560761b932b75b4f75112baae0e874dc46501 Mon Sep 17 00:00:00 2001
From: ToruNiina <niina.toru.68u@gmail.com>
Date: Wed, 16 Sep 2020 22:16:40 +0900
Subject: [PATCH] chore: enable to use __cplusplus on MSVC

related: https://github.com/ToruNiina/toml11/issues/112
---
 .github/workflows/main.yml |  2 ++
 CMakeLists.txt             |  4 ++++
 tests/test_literals.cpp    | 14 ++++++++++++++
 3 files changed, 20 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 467c861..2069b63 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -99,6 +99,7 @@ jobs:
       - name: Configure
         shell: cmd
         run: |
+            file --mime-encoding tests/test_literals.cpp
             mkdir build
             cd build
             cmake ../ -G "NMake Makefiles" -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DBoost_ADDITIONAL_VERSIONS=1.72.0 -DBoost_USE_MULTITHREADED=ON -DBoost_ARCHITECTURE=-x64 -DBoost_NO_BOOST_CMAKE=ON -DBOOST_ROOT=%BOOST_ROOT_1_72_0%
@@ -109,6 +110,7 @@ jobs:
       - name: Test
         working-directory: ./build
         run: |
+            ./tests/test_literals --log_level=all
             file --mime-encoding tests/toml/tests/example.toml
             file --mime-encoding tests/toml/tests/fruit.toml
             file --mime-encoding tests/toml/tests/hard_example.toml
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 340ae4b..43f9fd4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,6 +37,10 @@ else()
     endif()
 endif()
 
+if(MSVC)
+    add_definitions("/Zc:__cplusplus")
+endif()
+
 # Set some common directories
 include(GNUInstallDirs)
 set(toml11_install_cmake_dir         ${CMAKE_INSTALL_LIBDIR}/cmake/toml11)
diff --git a/tests/test_literals.cpp b/tests/test_literals.cpp
index 5aaf928..f29a6d1 100644
--- a/tests/test_literals.cpp
+++ b/tests/test_literals.cpp
@@ -264,6 +264,20 @@ BOOST_AUTO_TEST_CASE(test_value_as_u8_literal)
         const toml::value v4 = u8R"('''foo''')"_toml;
         const toml::value v5 = u8R"("ひらがな")"_toml;
 
+        // XXX
+#ifndef __cpp_char8_t
+        {
+            const char* l = u8R"(ひらがな)";
+            BOOST_TEST_MESSAGE(l);
+            while(*l != '\0')
+            {
+                const int tmp(*l);
+                BOOST_TEST_MESSAGE(std::hex << tmp);
+                ++l;
+            }
+        }
+#endif
+
         BOOST_TEST(v1.is_string());
         BOOST_TEST(v2.is_string());
         BOOST_TEST(v3.is_string());