* process.c (rb_f_fork): NetBSD 4.0 or later can fork.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17454 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Fri Jun 20 03:26:00 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* process.c (rb_f_fork): NetBSD 4.0 or later can fork.
+
 Fri Jun 20 03:19:39 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* test/testunit/collector/test_dir.rb: r15825 made it unnecessary to change

process.c

@@ -2398,7 +2398,7 @@ rb_fork(int *status, int (*chfunc)(void*), void *charg, VALUE fds)
 static VALUE
 rb_f_fork(VALUE obj)
 {
-#if defined(HAVE_FORK) && !defined(__NetBSD__)
+#if defined(HAVE_FORK) && !(defined(__NetBSD__) && __NetBSD_Version__ < 400000000)
     rb_pid_t pid;
 
     rb_secure(2);