https://git.ruby-lang.org/ruby.git/commit/?id=09c72f41ce

From 09c72f41ceeb6933e3b1da4eb581c4c22e9f1b89 Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@p...>
Date: Fri, 13 May 2022 09:32:18 -0400
Subject: Print function name in backtrace when available

If we don't have `saddr` but have `sname` we should output `sname`.
---
 addr2line.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/addr2line.c b/addr2line.c
index f660be9129..e102667602 100644
--- a/addr2line.c
+++ b/addr2line.c
@@ -2257,9 +2257,12 @@ print_line0(line_info_t *line, void *address) https://github.com/ruby/ruby/blob/trunk/addr2line.c#L2257
     else if (!line->path) {
         kprintf("[0x%"PRIxPTR"]\n", addr);
     }
-    else if (!line->saddr || !line->sname) {
+    else if (!line->sname) {
         kprintf("%s(0x%"PRIxPTR") [0x%"PRIxPTR"]\n", line->path, addr-line->base_addr, addr);
     }
+    else if (!line->saddr) {
+        kprintf("%s(%s) [0x%"PRIxPTR"]\n", line->path, line->sname, addr);
+    }
     else if (line->line <= 0) {
         kprintf("%s(%s+0x%"PRIxPTR") [0x%"PRIxPTR"]\n", line->path, line->sname,
                 d, addr);
-- 
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