summaryrefslogtreecommitdiff
path: root/class.c
diff options
context:
space:
mode:
Diffstat (limited to 'class.c')
-rw-r--r--class.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/class.c b/class.c
index d841328..45e27d8 100644
--- a/class.c
+++ b/class.c
@@ -1578,6 +1578,19 @@ singleton_class_of(VALUE obj)
return klass;
}
+void
+rb_freeze_singleton_class(VALUE x)
+{
+ /* should not propagate to meta-meta-class, and so on */
+ if (!(RBASIC(x)->flags & FL_SINGLETON)) {
+ VALUE klass = RBASIC_CLASS(x);
+ klass = RCLASS_ORIGIN(klass);
+ if (FL_TEST(klass, (FL_SINGLETON|FL_FREEZE)) == FL_SINGLETON) {
+ OBJ_FREEZE_RAW(klass);
+ }
+ }
+}
+
/*!
* Returns the singleton class of \a obj, or nil if obj is not a
* singleton object.