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-rw-r--r--class.c31
-rw-r--r--test/ruby/test_variable.rb6
2 files changed, 37 insertions, 0 deletions
diff --git a/class.c b/class.c
index 333a9d78e5..cf1731c1ab 100644
--- a/class.c
+++ b/class.c
@@ -404,6 +404,27 @@ class_init_copy_check(VALUE clone, VALUE orig)
}
}
+struct cvc_table_copy_ctx {
+ VALUE clone;
+ struct rb_id_table * new_table;
+};
+
+static enum rb_id_table_iterator_result
+cvc_table_copy(ID id, VALUE val, void *data) {
+ struct cvc_table_copy_ctx *ctx = (struct cvc_table_copy_ctx *)data;
+ struct rb_cvar_class_tbl_entry * orig_entry;
+ orig_entry = (struct rb_cvar_class_tbl_entry *)val;
+
+ struct rb_cvar_class_tbl_entry *ent;
+
+ ent = ALLOC(struct rb_cvar_class_tbl_entry);
+ ent->class_value = ctx->clone;
+ ent->global_cvar_state = orig_entry->global_cvar_state;
+ rb_id_table_insert(ctx->new_table, id, (VALUE)ent);
+
+ return ID_TABLE_CONTINUE;
+}
+
static void
copy_tables(VALUE clone, VALUE orig)
{
@@ -411,6 +432,16 @@ copy_tables(VALUE clone, VALUE orig)
rb_free_const_table(RCLASS_CONST_TBL(clone));
RCLASS_CONST_TBL(clone) = 0;
}
+ if (RCLASS_CVC_TBL(orig)) {
+ struct rb_id_table *rb_cvc_tbl = RCLASS_CVC_TBL(orig);
+ struct rb_id_table *rb_cvc_tbl_dup = rb_id_table_create(rb_id_table_size(rb_cvc_tbl));
+
+ struct cvc_table_copy_ctx ctx;
+ ctx.clone = clone;
+ ctx.new_table = rb_cvc_tbl_dup;
+ rb_id_table_foreach(rb_cvc_tbl, cvc_table_copy, &ctx);
+ RCLASS_CVC_TBL(clone) = rb_cvc_tbl_dup;
+ }
RCLASS_M_TBL(clone) = 0;
if (!RB_TYPE_P(clone, T_ICLASS)) {
st_data_t id;
diff --git a/test/ruby/test_variable.rb b/test/ruby/test_variable.rb
index 195f5c94fb..b7892f0cdc 100644
--- a/test/ruby/test_variable.rb
+++ b/test/ruby/test_variable.rb
@@ -33,6 +33,12 @@ class TestVariable < Test::Unit::TestCase
end
end
+ Athena = Gods.clone
+
+ def test_cloned_classes_copy_cvar_cache
+ assert_equal "Cronus", Athena.new.ruler0
+ end
+
def test_setting_class_variable_on_module_through_inheritance
mod = Module.new
mod.class_variable_set(:@@foo, 1)