From 338d90b89f23deaa5ce2ae80b8adf9cb52808679 Mon Sep 17 00:00:00 2001
From: Nathan Sidwell <nathan@codesourcery.com>
Date: Sun, 25 Nov 2001 13:21:45 +0000
Subject: re PR c++/3145 (virtual inheritance still creates wrong code)

cp:
	PR g++/3145
	* class.c (build_vbase_pointer): Remove.
	(build_vbase_path): Remove.
	(build_base_path): New function.
	* cp-tree.h (base_access, base_kind): New enumerations.
	(build_base_path): Declare.
	(convert_pointer_to_real): Remove.
	(convert_pointer_to): Remove.
	(lookup_base): Declare.
	(convert_pointer_to_vbase): Remove.
	* call.c (build_scoped_method_call): Use lookup_base &
	build_base_path instead of convert_pointer_to_real,
	get_base_distance & get_binfo.
	(build_over_call): Likewise.
	* cvt.c (cp_convert_to_pointer): Likewise.
	(convert_to_pointer_force): Likewise.
	(build_up_reference): Likewise.
	(convert_pointer_to_real): Remove.
	(convert_pointer_to): Remove.
	* init.c (dfs_initialize_vtbl_ptrs): Use build_base_path
	instead of convert_pointer_to_vbase & build_vbase_path.
	(emit_base_init): Use build_base_path instead of
	convert_pointer_to_real.
	(expand_virtual_init): Lose unrequired conversions.
	(resolve_offset_ref): Use lookup_base and build_base_path
	instead of convert_pointer_to.
	* rtti.c (build_dynamic_cast_1): Use lookup_base &
	build_base_path instead of get_base_distance & build_vbase_path.
	* search.c (get_vbase_1): Remove.
	(get_vbase): Remove.
	(convert_pointer_to_vbase): Remove.
	(lookup_base_recursive): New function.
	(lookup_base): New function.
	* typeck.c (require_complete_type): Use lookup_base &
	build_base_path instead of convert_pointer_to.
	(build_component_ref): Likewise.
	(build_x_function_call): Likewise.
	(get_member_function_from_ptrfunc): Likewise.
	(build_component_addr): Likewise.
	* typeck2.c (build_scoped_ref): Likewise.
testsuite:
	* g++.dg/abi/vbase8-4.C: New test.

From-SVN: r47316
---
 gcc/cp/call.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

(limited to 'gcc/cp/call.c')

diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index 46aacca..c0ab2c2 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -298,7 +298,7 @@ build_scoped_method_call (exp, basetype, name, parms)
 
   if (! binfo)
     {
-      binfo = get_binfo (basetype, type, 1);
+      binfo = lookup_base (type, basetype, ba_check, NULL);
       if (binfo == error_mark_node)
 	return error_mark_node;
       if (! binfo)
@@ -308,9 +308,12 @@ build_scoped_method_call (exp, basetype, name, parms)
   if (binfo)
     {
       if (TREE_CODE (exp) == INDIRECT_REF)
-	decl = build_indirect_ref
-	  (convert_pointer_to_real
-	   (binfo, build_unary_op (ADDR_EXPR, exp, 0)), NULL);
+	{
+	  decl = build_base_path (PLUS_EXPR,
+				  build_unary_op (ADDR_EXPR, exp, 0),
+				  binfo, 1);
+	  decl = build_indirect_ref (decl, NULL);
+	}
       else
 	decl = build_scoped_ref (exp, basetype);
 
@@ -4157,7 +4160,9 @@ build_over_call (cand, args, flags)
          So we can assume that anything passed as 'this' is non-null, and
 	 optimize accordingly.  */
       my_friendly_assert (TREE_CODE (parmtype) == POINTER_TYPE, 19990811);
-      t = convert_pointer_to_real (TREE_TYPE (parmtype), TREE_VALUE (arg));
+      t = lookup_base (TREE_TYPE (TREE_TYPE (TREE_VALUE (arg))),
+		       TREE_TYPE (parmtype), ba_ignore, NULL);
+      t = build_base_path (PLUS_EXPR, TREE_VALUE (arg), t, 1);
       converted_args = tree_cons (NULL_TREE, t, converted_args);
       parm = TREE_CHAIN (parm);
       arg = TREE_CHAIN (arg);
@@ -4307,9 +4312,12 @@ build_over_call (cand, args, flags)
   if (DECL_VINDEX (fn) && (flags & LOOKUP_NONVIRTUAL) == 0)
     {
       tree t, *p = &TREE_VALUE (converted_args);
-      tree binfo = get_binfo
-	(DECL_VIRTUAL_CONTEXT (fn), TREE_TYPE (TREE_TYPE (*p)), 0);
-      *p = convert_pointer_to_real (binfo, *p);
+      tree binfo = lookup_base (TREE_TYPE (TREE_TYPE (*p)),
+				DECL_VIRTUAL_CONTEXT (fn),
+				ba_any, NULL);
+      my_friendly_assert (binfo && binfo != error_mark_node, 20010730);
+      
+      *p = build_base_path (PLUS_EXPR, *p, binfo, 1);
       if (TREE_SIDE_EFFECTS (*p))
 	*p = save_expr (*p);
       t = build_pointer_type (TREE_TYPE (fn));
-- 
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