decl.c (grokdeclarator): Return NULL_TREE instead of 0.

	* decl.c (grokdeclarator): Return NULL_TREE instead of 0.
	* typeck.c (unary_complex_lvalue): Likewise.

From-SVN: r110933

gcc/cp/ChangeLog

 2006-02-13  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	* decl.c (grokdeclarator): Return NULL_TREE instead of 0.
+	* typeck.c (unary_complex_lvalue): Likewise.
+
+2006-02-13  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
+
 	* lex.c (parse_strconst_pragma): Return error_mark_node instead of
 	"(tree)-1" to indicate failure.  Simplify.
 	(handle_pragma_interface): Test for error_mark_node instead of

gcc/cp/decl.c

@@ -6815,7 +6815,7 @@ grokdeclarator (const cp_declarator *declarator,
      a function declarator.  */
 
   if (funcdef_flag && innermost_code != cdk_function)
-    return 0;
+    return NULL_TREE;
 
   if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
       && innermost_code != cdk_function

gcc/cp/typeck.c

@@ -4343,7 +4343,7 @@ unary_complex_lvalue (enum tree_code code, tree arg)
     }
 
   if (code != ADDR_EXPR)
-    return 0;
+    return NULL_TREE;
 
   /* Handle (a = b) used as an "lvalue" for `&'.  */
   if (TREE_CODE (arg) == MODIFY_EXPR
@@ -4384,7 +4384,7 @@ unary_complex_lvalue (enum tree_code code, tree arg)
   }
 
   /* Don't let anything else be handled specially.  */
-  return 0;
+  return NULL_TREE;
 }
 
 /* Mark EXP saying that we need to be able to take the