From e7fe6ee2638dee438c1d79ab16a0403aebec0a60 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Sat, 4 Nov 2017 00:35:50 +0900
Subject: Avoid pointer arithmetic in backtrace.c; #3816

---
 src/backtrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/backtrace.c')

diff --git a/src/backtrace.c b/src/backtrace.c
index ddeb2a3ca..f2cf2cd0f 100644
--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -51,7 +51,7 @@ each_backtrace(mrb_state *mrb, ptrdiff_t ciidx, mrb_code *pc0, each_backtrace_fu
       pc = mrb->c->cibase[i].err;
     }
     else if (i+1 <= ciidx) {
-      pc = mrb->c->cibase[i+1].pc - 1;
+      pc = &mrb->c->cibase[i+1].pc[-1];
     }
     else {
       pc = pc0;
-- 
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