From d5f47cbcad3d2fa39e37d8bbafbb07f6f3b2503e Mon Sep 17 00:00:00 2001
From: Vojtech Kral <vojtech@kral.hk>
Date: Tue, 22 Jan 2019 10:38:14 +0100
Subject: [PATCH] Fix usage of is_trivially_copyable on older GCC

---
 src/libslic3r/Fill/FillBase.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libslic3r/Fill/FillBase.hpp b/src/libslic3r/Fill/FillBase.hpp
index 77799f6fac..d43ac8b44b 100644
--- a/src/libslic3r/Fill/FillBase.hpp
+++ b/src/libslic3r/Fill/FillBase.hpp
@@ -40,7 +40,11 @@ struct FillParams
     // in this case we don't try to make more continuous paths
     bool        complete;
 };
+#if (!defined __GNUC__) || __GNUC__ > 4
+// Older GCCs don't have std::is_trivially_copyable
+// cf. https://gcc.gnu.org/onlinedocs/gcc-4.9.4/libstdc++/manual/manual/status.html#status.iso.2011
 static_assert(std::is_trivially_copyable<FillParams>::value, "FillParams class is not POD (and it should be - see constructor).");
+#endif
 
 class Fill
 {