* cp-tree.h (DECL_NEEDED_P): Tweak to match documentation.

From-SVN: r30635

gcc/cp/ChangeLog

+1999-11-23  Mark Mitchell  <mark@codesourcery.com>
+
+	* cp-tree.h (DECL_NEEDED_P): Tweak to match documentation.
+
 1999-11-22  Mark Mitchell  <mark@codesourcery.com>
 
 	* cp-tree.def (CTOR_COMPLETE): New tree node.
-	(finish_constructor_body): Add it, to mark the end of the
+	* decl.c (finish_constructor_body): Add it, to mark the end of the
 	constructor.
 	(finish_function): Don't call end_protect_partials here.
 	* ir.texi (CTOR_COMPLETE): Document it.

gcc/cp/cp-tree.h

@@ -2634,8 +2634,9 @@ extern int flag_new_for_scope;
    the symbol has been referenced in the generated code.  If, however,
    we are not generating code, then it is also true when a symbol has
    just been used somewhere, even if it's not really needed.  */
-#define DECL_NEEDED_P(DECL)				  \
-  (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME ((DECL)))) \
+#define DECL_NEEDED_P(DECL)				 	\
+  ((TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME ((DECL)))) 	\
+   || (flag_syntax_only && TREE_USED ((DECL))))
 
 /* An un-parsed default argument looks like an identifier.  */
 #define DEFARG_LENGTH(NODE)  (DEFAULT_ARG_CHECK(NODE)->identifier.length)