Introduce `Fiber#storage` for inheritable fiber-scoped variables. (#6612)

1 files changed, 2 insertions, 1 deletions

diff --git a/enumerator.c b/enumerator.c
index 4d2d73240e..a0c51b585c 100644
--- a/enumerator.c
+++ b/enumerator.c
@@ -766,7 +766,8 @@ next_init(VALUE obj, struct enumerator *e)
 {
     VALUE curr = rb_fiber_current();
     e->dst = curr;
-    e->fib = rb_fiber_new(next_i, obj);
+    // We inherit the fiber storage by reference, not by copy, by specifying Qfalse here.
+    e->fib = rb_fiber_new_storage(next_i, obj, Qfalse);
     e->lookahead = Qundef;
 }