https://git.ruby-lang.org/ruby.git/commit/?id=7d22060c14

From 7d22060c14895bbca3ff962e5456384095b66738 Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@r...>
Date: Thu, 4 Feb 2021 17:45:54 +0900
Subject: addr2line.c: DW_LNS_fixed_advance_pc takes a single uhalf operand

Fixes [Bug #17609]

Co-Authored-By: xtkoba (Tee KOBAYASHI) <xtkoba+ruby@g...>
---
 addr2line.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/addr2line.c b/addr2line.c
index 9669427..2095591 100644
--- a/addr2line.c
+++ b/addr2line.c
@@ -437,7 +437,8 @@ parse_debug_line_cu(int num_traces, void **traces, char **debug_line, https://github.com/ruby/ruby/blob/trunk/addr2line.c#L437
 	    addr += a;
 	    break;
 	case DW_LNS_fixed_advance_pc:
-	    a = *(unsigned char *)p++;
+	    a = *(uint16_t *)p;
+	    p += sizeof(uint16_t);
 	    addr += a;
 	    break;
 	case DW_LNS_set_prologue_end:
-- 
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