diff --git a/.drone.star b/.drone.star
index 7cedae0..c2ac46a 100644
--- a/.drone.star
+++ b/.drone.star
@@ -38,8 +38,8 @@ def main(ctx):
   linux_cxx("Coverage", "g++-8", packages="g++-8", buildscript="drone", buildtype="codecov", image=linuxglobalimage, environment={'COMMENT': 'codecov.io', 'LCOV_BRANCH_COVERAGE': '0', 'B2_CXXSTD': '11', 'B2_TOOLSET': 'gcc-8', 'B2_DEFINES': 'BOOST_NO_STRESS_TEST=1', "CODECOV_TOKEN": {"from_secret": "codecov_token"}, "COVERALLS_REPO_TOKEN": {"from_secret": "coveralls_repo_token"}}, globalenv=globalenv),
 
   # Latest gcc
-  linux_cxx("GCC 12: C++17,20", "g++-12", packages="g++-12", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'B2_TOOLSET': 'gcc-12', 'B2_CXXFLAGS': '-Werror -Wno-error=restrict', 'B2_CXXSTD': '17,20'}, globalenv=globalenv),
-  linux_cxx("GCC 12: C++17,20 Standalone", "g++-12", packages="g++-12", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'B2_TOOLSET': 'gcc-12', 'B2_CXXFLAGS': '-Werror -Wno-error=restrict', 'B2_DEFINES': 'define=BOOST_STATIC_STRING_STANDALONE', 'B2_CXXSTD': '17,20'}, globalenv=globalenv),
+  linux_cxx("GCC 12: C++17,20", "g++-12", packages="g++-12", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'B2_TOOLSET': 'gcc-12', 'B2_CXXFLAGS': '-Werror', 'B2_CXXSTD': '17,20'}, globalenv=globalenv),
+  linux_cxx("GCC 12: C++17,20 Standalone", "g++-12", packages="g++-12", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'B2_TOOLSET': 'gcc-12', 'B2_CXXFLAGS': '-Werror', 'B2_DEFINES': 'define=BOOST_STATIC_STRING_STANDALONE', 'B2_CXXSTD': '17,20'}, globalenv=globalenv),
 
   # Latest clang
   linux_cxx("Clang 15: C++17,20", "clang++-15", packages="clang-15 libstdc++-10-dev", llvm_os="jammy", llvm_ver="15", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2204:1", environment={'B2_TOOLSET': 'clang-15', 'B2_CXXFLAGS': '-Werror', 'B2_CXXSTD': '17,20'}, globalenv=globalenv),
@@ -58,7 +58,7 @@ def main(ctx):
   linux_cxx("Valgrind", "clang++-14", packages="clang-14 libc6-dbg libc++-dev libstdc++-9-dev", llvm_os="jammy", llvm_ver="14", buildscript="drone", buildtype="valgrind", image="cppalliance/droneubuntu2204:1", environment={'COMMENT': 'valgrind', 'B2_TOOLSET': 'clang-14', 'B2_CXXSTD': '11,14,17', 'B2_DEFINES': 'BOOST_NO_STRESS_TEST=1', 'B2_VARIANT': 'debug', 'B2_TESTFLAGS': 'testing.launcher=valgrind', 'VALGRIND_OPTS': '--error-exitcode=1'}, globalenv=globalenv),
 
   # arm64 (unsigned char)
-  linux_cxx("ARM64: GCC 11", "g++-11", packages="g++-11", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2004:multiarch", environment={'B2_TOOLSET': 'gcc-11', 'B2_CXXFLAGS': '-Werror -Wno-error=array-bounds -Wno-error=restrict -Wno-error=stringop-overflow', 'B2_CXXSTD': '17,20'}, arch="arm64", globalenv=globalenv),
+  linux_cxx("ARM64: GCC 11", "g++-11", packages="g++-11", buildscript="drone", buildtype="boost", image="cppalliance/droneubuntu2004:multiarch", environment={'B2_TOOLSET': 'gcc-11', 'B2_CXXFLAGS': '-Werror -Wno-error=array-bounds -Wno-error=stringop-overflow', 'B2_CXXSTD': '17,20'}, arch="arm64", globalenv=globalenv),
 
   # s390x
   linux_cxx("S390x: Clang 12", "clang++-12", packages="clang-12 libstdc++-9-dev", llvm_os="focal", llvm_ver="12", buildtype="boost", buildscript="drone", image="cppalliance/droneubuntu2004:multiarch", environment={'B2_TOOLSET': 'clang-12', 'B2_CXXFLAGS': '-Werror', 'B2_CXXSTD': '17,20'}, arch="s390x", globalenv=globalenv),
diff --git a/include/boost/static_string/static_string.hpp b/include/boost/static_string/static_string.hpp
index e69354c..71b345c 100644
--- a/include/boost/static_string/static_string.hpp
+++ b/include/boost/static_string/static_string.hpp
@@ -6063,33 +6063,49 @@ insert(
       detail::is_forward_iterator<
         ForwardIterator>::value, iterator>::type
 {
+  // input
+  const std::size_t count = detail::distance(first, last);
+  const auto first_addr = &*first;
+  const auto last_addr = first_addr + count;
+
+  // output
   const auto curr_size = size();
   const auto curr_data = data();
-  const std::size_t count = detail::distance(first, last);
   const std::size_t index = pos - curr_data;
-  const auto first_addr = &*first;
+  auto dest = &curr_data[index];
+
   if (count > max_size() - curr_size)
     detail::throw_exception<std::length_error>(
       "count > max_size() - curr_size");
+
+  traits_type::move(dest + count, dest, curr_size - index + 1);
   const bool inside = detail::ptr_in_range(curr_data, curr_data + curr_size, first_addr);
-  if (!inside || (inside && (first_addr + count <= pos)))
+  if (!inside || last_addr <= pos)
   {
-    traits_type::move(&curr_data[index + count], &curr_data[index], curr_size - index + 1);
-    detail::copy_with_traits<Traits>(first, last, &curr_data[index]);
+    detail::copy_with_traits<Traits>(first, last, dest);
   }
-  else
+  else /* if (inside) */
   {
     const size_type offset = first_addr - curr_data;
-    traits_type::move(&curr_data[index + count], &curr_data[index], curr_size - index + 1);
     if (offset < index)
     {
       const size_type diff = index - offset;
-      traits_type::copy(&curr_data[index], &curr_data[offset], diff);
-      traits_type::copy(&curr_data[index + diff], &curr_data[index + count], count - diff);
+#if BOOST_WORKAROUND( BOOST_GCC, >= 120000 )
+      detail::copy_with_traits<Traits>(&curr_data[offset], &curr_data[offset] + diff, dest);
+      detail::copy_with_traits<Traits>(dest + count, dest + 2 * count - diff, &curr_data[index + diff]);
+#else
+      traits_type::copy(dest, &curr_data[offset], diff);
+      traits_type::copy(&curr_data[index + diff], dest + count, count - diff);
+#endif
     }
     else
     {
-      traits_type::copy(&curr_data[index], &curr_data[offset + count], count);
+      auto src = &curr_data[offset + count];
+#if BOOST_WORKAROUND( BOOST_GCC, >= 120000 )
+      detail::copy_with_traits<Traits>(src, src + count, dest);
+#else
+      traits_type::copy(dest, src, count);
+#endif
     }
   }
   this->set_size(curr_size + count);