Move void_list_node init to common code

All frontends replicate this, so move it.

gcc/
	* tree.cc (build_common_tree_nodes): Initialize void_list_node
	here.

gcc/ada/
	* gcc-interface/trans.cc (gigi): Do not initialize void_list_node.

gcc/c-family/
	* c-common.h (build_void_list_node): Remove.
	* c-common.cc (c_common_nodes_and_builtins): Do not initialize
	void_list_node.

gcc/c/
	* c-decl.cc (build_void_list_node): Remove.

gcc/cp/
	* decl.cc (cxx_init_decl_processing): Inline last
	build_void_list_node call.
	(build_void_list_node): Remove.

gcc/d/
	* d-builtins.cc (d_build_c_type_nodes): Do not initialize
	void_list_node.

gcc/fortran/
	* f95-lang.cc (gfc_init_decl_processing): Do not initialize
	void_list_node.

gcc/go/
	* go-lang.cc (go_langhook_init): Do not initialize
	void_list_node.

gcc/jit/
	* dummy-frontend.cc (jit_langhook_init): Do not initialize
	void_list_node.

gcc/lto/
	* lto-lang.cc (lto_build_c_type_nodes): Do not initialize
	void_list_node.

1 files changed, 1 insertions, 9 deletions

diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc
index 006e9af..070f673 100644
--- a/gcc/cp/decl.cc
+++ b/gcc/cp/decl.cc
@@ -4623,7 +4623,7 @@ cxx_init_decl_processing (void)
   record_unknown_type (init_list_type_node, "init list");
 
   /* Used when parsing to distinguish parameter-lists () and (void).  */
-  explicit_void_list_node = build_void_list_node ();
+  explicit_void_list_node = build_tree_list (NULL_TREE, void_type_node);
 
   {
     /* Make sure we get a unique function type, so we can give
@@ -18450,14 +18450,6 @@ cp_tree_node_structure (union lang_tree_node * t)
     }
 }
 
-/* Build the void_list_node (void_type_node having been created).  */
-tree
-build_void_list_node (void)
-{
-  tree t = build_tree_list (NULL_TREE, void_type_node);
-  return t;
-}
-
 bool
 cp_missing_noreturn_ok_p (tree decl)
 {