From 87931b074feb803ae622ca064fbf1d5202879824 Mon Sep 17 00:00:00 2001
From: jzmaddock <john@johnmaddock.co.uk>
Date: Tue, 16 Apr 2019 19:37:15 +0100
Subject: [PATCH] In C++20 the u8 literal produces a char8_t[] not a char[].
 Fixes https://github.com/boostorg/config/issues/276.

---
 test/boost_no_unicode_literals.ipp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/boost_no_unicode_literals.ipp b/test/boost_no_unicode_literals.ipp
index d5ffa0cb..bbf865ec 100644
--- a/test/boost_no_unicode_literals.ipp
+++ b/test/boost_no_unicode_literals.ipp
@@ -17,7 +17,12 @@ void quiet_warning(const CharT*){}
 
 int test()
 {
+#ifdef _­_­cpp_­char8_­t
+   // The change to char8_t in C++20 is a breaking change to the std:
+   const char8_t* c8 = u8"";
+#else
   const char* c8 = u8"";
+#endif
   const char16_t* c16 = u"";
   const char32_t* c32 = U"";
   quiet_warning(c8);