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, 0 insertions, 3 deletions

diff --git a/gcc/go/go-lang.cc b/gcc/go/go-lang.cc
index d519a69..4743370 100644
--- a/gcc/go/go-lang.cc
+++ b/gcc/go/go-lang.cc
@@ -98,9 +98,6 @@ go_langhook_init (void)
 {
   build_common_tree_nodes (false);
 
-  /* I don't know why this has to be done explicitly.  */
-  void_list_node = build_tree_list (NULL_TREE, void_type_node);
-
   /* We must create the gogo IR after calling build_common_tree_nodes
      (because Gogo::define_builtin_function_trees refers indirectly
      to, e.g., unsigned_char_type_node) but before calling