* decl.c (cplus_expand_expr_stmt): Strip unused INDIRECT_REFs.

From-SVN: r18974

gcc/cp/ChangeLog

 Fri Apr  3 02:22:59 1998  Jason Merrill  <jason@yorick.cygnus.com>
 
+	* decl.c (cplus_expand_expr_stmt): Strip unused INDIRECT_REFs.
+
 	Re-implement allocation of base class subobjects.
 	* tree.c (unshare_base_binfos): New fn.
 	(layout_basetypes): Use it.  Now handles offsets of both virtual and

gcc/cp/decl.c

@@ -12886,6 +12886,12 @@ cplus_expand_expr_stmt (exp)
 	 libg++ to miscompile, and tString to core dump.  */
       exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp);
 #endif
+
+      /* Strip unused implicit INDIRECT_REFs of references.  */
+      if (TREE_CODE (exp) == INDIRECT_REF
+	  && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp, 0))) == REFERENCE_TYPE)
+	exp = TREE_OPERAND (exp, 0);
+
       /* If we don't do this, we end up down inside expand_expr
 	 trying to do TYPE_MODE on the ERROR_MARK, and really
 	 go outside the bounds of the type.  */