merges r23809 from trunk into ruby_1_9_1.

--
* load.c (Init_load): $: must be readonly.  [ruby-dev:38690]

* ruby.c (ruby_prog_init): $-W must be readonly.  [ruby-dev:38691]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@23810 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/ruby.c b/ruby.c
index 3392c7468..c6cfdf7e1 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1763,7 +1763,7 @@ ruby_prog_init(void)
     rb_define_hooked_variable("$VERBOSE", &ruby_verbose, 0, verbose_setter);
     rb_define_hooked_variable("$-v", &ruby_verbose, 0, verbose_setter);
     rb_define_hooked_variable("$-w", &ruby_verbose, 0, verbose_setter);
-    rb_define_hooked_variable("$-W", &ruby_verbose, opt_W_getter, 0);
+    rb_define_hooked_variable("$-W", &ruby_verbose, opt_W_getter, rb_gvar_readonly_setter);
     rb_define_variable("$DEBUG", &ruby_debug);
     rb_define_variable("$-d", &ruby_debug);