c-decl.c (finish_function): Don't treat 'main' specially unless flag_hosted.

	* c-decl.c (finish_function): Don't treat 'main' specially unless
	flag_hosted.  In C99 mode, return 0 from 'main' unless
	DEFAULT_MAIN_RETURN is otherwise defined.

From-SVN: r35300

gcc/ChangeLog

@@ -10,6 +10,10 @@
 
 2000-07-27  Joseph S. Myers  <jsm28@cam.ac.uk>
 
+	* c-decl.c (finish_function): Don't treat 'main' specially unless
+	flag_hosted.  In C99 mode, return 0 from 'main' unless
+	DEFAULT_MAIN_RETURN is otherwise defined.
+
 	* c-decl.c (store_parm_decls): In C99 mode, pedwarn for function
 	parameters defaulting to int in an old-style function definition.
 

gcc/c-decl.c

@@ -6589,7 +6589,8 @@ finish_function (nested)
       setjmp_protect_args ();
     }
 
-  if (! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main"))
+  if (! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main")
+      && flag_hosted)
     {
       if (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (fndecl)))
 	  != integer_type_node)
@@ -6604,6 +6605,9 @@ finish_function (nested)
 #ifdef DEFAULT_MAIN_RETURN
 	  /* Make it so that `main' always returns success by default.  */
 	  DEFAULT_MAIN_RETURN;
+#else
+	  if (flag_isoc99)
+	    c_expand_return (integer_zero_node);
 #endif
 	}
     }