1 files changed, 0 insertions, 1 deletions
diff --git a/cont.c b/cont.c
index f75ddf1602..e06708f9c3 100644
--- a/cont.c
+++ b/cont.c
@@ -474,7 +474,6 @@ rb_fiber_s_new(VALUE self)
     th->stack = 0;
     th->stack_size = FIBER_STACK_SIZE;
     th->stack = ALLOC_N(VALUE, th->stack_size);
-    MEMZERO(th->stack, VALUE, th->stack_size);
 
     th->cfp = (void *)(th->stack + th->stack_size);
     th->cfp--;