From 4213f42555a62b565ff99e0ad3e7d3c7f5495180 Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@jeremyevans.net>
Date: Wed, 21 Dec 2022 21:02:43 -0800
Subject: Make sure TracePoint#binding returns nil for c_call/c_return events

This makes sure the method returns nil for these events, as
described in NEWS, even if the TracePoint could create a binding.
---
 vm_trace.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'vm_trace.c')

diff --git a/vm_trace.c b/vm_trace.c
index ea1d47361d..69b360dae9 100644
--- a/vm_trace.c
+++ b/vm_trace.c
@@ -961,6 +961,11 @@ VALUE
 rb_tracearg_binding(rb_trace_arg_t *trace_arg)
 {
     rb_control_frame_t *cfp;
+    switch (trace_arg->event) {
+      case RUBY_EVENT_C_CALL:
+      case RUBY_EVENT_C_RETURN:
+        return Qnil;
+    }
     cfp = rb_vm_get_binding_creatable_next_cfp(trace_arg->ec, trace_arg->cfp);
 
     if (cfp && imemo_type_p((VALUE)cfp->iseq, imemo_iseq)) {
-- 
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