2 files changed, 22 insertions, 1 deletions
diff --git a/bootstraptest/test_method.rb b/bootstraptest/test_method.rb
index af9443b8c6..f6f04541d6 100644
--- a/bootstraptest/test_method.rb
+++ b/bootstraptest/test_method.rb
@@ -1374,3 +1374,24 @@ assert_equal 'ok', %q{
   foo(:foo, b: :ok)
   foo(*["foo"], b: :ok)
 }
+
+assert_equal 'ok', %q{
+  Thing = Struct.new(:value)
+
+  Obj = Thing.new("ok")
+
+  def delegate(...)
+    Obj.value(...)
+  end
+
+  def no_args
+    delegate
+  end
+
+  def splat_args(*args)
+    delegate(*args)
+  end
+
+  no_args
+  splat_args
+}
diff --git a/vm_args.c b/vm_args.c
index 0ecdc31a31..28f685d7dd 100644
--- a/vm_args.c
+++ b/vm_args.c
@@ -1177,7 +1177,7 @@ vm_caller_setup_fwd_args(const rb_execution_context_t *ec, rb_control_frame_t *r
 
     *adjusted_ci = VM_CI_ON_STACK(
             site_mid,
-            (caller_flag | (site_flag & (VM_CALL_FCALL | VM_CALL_FORWARDING))),
+            ((caller_flag & ~VM_CALL_ARGS_SIMPLE) | (site_flag & (VM_CALL_FCALL | VM_CALL_FORWARDING))),
             site_argc + caller_argc,
             kw
             );