diff --git a/gcc/lto-cgraph.c b/gcc/lto-cgraph.c
index 12fad49..5ebdd50 100644
--- a/gcc/lto-cgraph.c
+++ b/gcc/lto-cgraph.c
@@ -167,6 +167,8 @@ output_edge (struct lto_simple_output_block *ob,
   intptr_t ref;
   unsigned HOST_WIDEST_INT flags = 0;
 
+  gcc_assert (!DECL_EXTERNAL (edge->caller->decl));
+
   lto_output_uleb128_stream (ob->main_stream, LTO_cgraph_edge);
   LTO_DEBUG_INDENT (LTO_cgraph_edge);
 
diff --git a/gcc/lto-function-out.c b/gcc/lto-function-out.c
index 90dedad..17621f2 100644
--- a/gcc/lto-function-out.c
+++ b/gcc/lto-function-out.c
@@ -2379,6 +2379,9 @@ lto_output (cgraph_node_set set)
   struct lto_out_decl_state *decl_state;
   cgraph_node_set_iterator csi;
 
+  /* Remove bodies of extern inline functions we never inlined. */
+  cgraph_remove_unreachable_nodes (false, dump_file);
+
   bitmap_obstack_initialize (NULL);
   lto_static_init_local ();