From: Daniel Arndt <arndtd@ornl.gov>
Date: Mon, 5 Dec 2022 19:29:10 +0000 (-0500)
Subject: Don't use __has_trivial_copy
X-Git-Tag: v9.5.0-rc1~760^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F14534%2Fhead;p=dealii.git

Don't use __has_trivial_copy
---

diff --git a/include/deal.II/lac/vector_operations_internal.h b/include/deal.II/lac/vector_operations_internal.h
index d40e9c91b7..10ecc4f860 100644
--- a/include/deal.II/lac/vector_operations_internal.h
+++ b/include/deal.II/lac/vector_operations_internal.h
@@ -247,17 +247,12 @@ namespace internal
       {
         Assert(end >= begin, ExcInternalError());
 
-#if __GNUG__ && __GNUC__ < 5
-        if (__has_trivial_copy(Number) &&
-            std::is_same<Number, OtherNumber>::value)
-#else
-#  ifdef DEAL_II_HAVE_CXX17
+#ifdef DEAL_II_HAVE_CXX17
         if constexpr (std::is_trivially_copyable<Number>() &&
                       std::is_same<Number, OtherNumber>::value)
-#  else
+#else
         if (std::is_trivially_copyable<Number>() &&
             std::is_same<Number, OtherNumber>::value)
-#  endif
 #endif
           std::memcpy(dst + begin, src + begin, (end - begin) * sizeof(Number));
         else