From ff0e3bcea6fd7d34d4fc6f3f78ef3e4120825401 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Wed, 22 Jul 2020 14:20:08 +0900
Subject: Check `lv` before printing local variable names.

---
 src/codedump.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/codedump.c')

diff --git a/src/codedump.c b/src/codedump.c
index 24fc94ef7..106312f67 100644
--- a/src/codedump.c
+++ b/src/codedump.c
@@ -11,6 +11,7 @@ print_r(mrb_state *mrb, const mrb_irep *irep, size_t n)
 {
   if (n == 0) return;
   if (n > irep->nlocals) return;
+  if (!irep->lv[n-1]) return;
   printf(" R%d:%s", (int)n, mrb_sym_dump(mrb, irep->lv[n-1]));
 }
 
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