Older GCC doesn't accept use of this in constexpr.

Fix #11517
2015-08-03 00:03:40 +09:00
parent 24f527d401
commit 8242c688e7
3 changed files with 13 additions and 3 deletions
--- a/include/boost/fusion/support/config.hpp
+++ b/include/boost/fusion/support/config.hpp
@ -88,4 +88,12 @@ namespace std
 }
 #endif

+
+// Workaround for older GCC that doesn't accept `this` in constexpr.
+#if BOOST_WORKAROUND(BOOST_GCC, < 40700)
+#define BOOST_FUSION_CONSTEXPR_THIS
+#else
+#define BOOST_FUSION_CONSTEXPR_THIS BOOST_CONSTEXPR
+#endif
+
 #endif