1 files changed, 4 insertions, 0 deletions
diff --git a/eval.c b/eval.c
index 1f9d9375dd..a8df3ebd1b 100644
--- a/eval.c
+++ b/eval.c
@@ -11473,6 +11473,10 @@ rb_thread_start_0(fn, arg, th)
     if (th == main_thread) ruby_stop(state);
     rb_thread_remove(th);
 
+    if (saved_block) {
+	blk_free(saved_block);
+    }
+
     if (state && status != THREAD_TO_KILL && !NIL_P(ruby_errinfo)) {
 	th->flags |= THREAD_RAISED;
 	if (state == TAG_FATAL) {