From 2adbfa4af7b9bcb437b4341bae06d9d8a766d6b2 Mon Sep 17 00:00:00 2001
From: vitaut <victor.zverovich@gmail.com>
Date: Wed, 18 Mar 2015 11:02:37 -0700
Subject: [PATCH] Test IsConvertibleToInt with a C++11 enum

---
 test/CMakeLists.txt | 8 ++++++++
 test/util-test.cc   | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 6ddd5871a6cc..210f3abd6d76 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -14,6 +14,14 @@ function(add_fmt_test name)
   add_test(NAME ${name} COMMAND ${name})
 endfunction()
 
+check_cxx_source_compiles("
+  enum C : char {A};
+  int main() {}"
+  HAVE_ENUM_BASE)
+if (HAVE_ENUM_BASE)
+  add_definitions(-DFMT_USE_ENUM_BASE=1)
+endif ()
+
 add_fmt_test(gtest-extra-test)
 add_fmt_test(format-test)
 add_fmt_test(format-impl-test CUSTOM_LINK)
diff --git a/test/util-test.cc b/test/util-test.cc
index 92d22d35cc19..6392528799a5 100644
--- a/test/util-test.cc
+++ b/test/util-test.cc
@@ -837,3 +837,11 @@ TEST(UtilTest, IsConvertibleToInt) {
   EXPECT_TRUE(fmt::internal::IsConvertibleToInt<char>::value);
   EXPECT_FALSE(fmt::internal::IsConvertibleToInt<const char *>::value);
 }
+
+#if FMT_USE_ENUM_BASE
+enum TestEnum : char {TestValue};
+TEST(UtilTest, IsEnumConvertibleToInt) {
+  EXPECT_TRUE(fmt::internal::IsConvertibleToInt<TestEnum>::value);
+}
+#endif
+