From 5e11790c7bb05aa929abb8c080c7c7ee9ab09868 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Wed, 23 Oct 2024 16:25:58 -0700
Subject: [PATCH] mutex protect comp.arena in --verbose-link

---
 src/link/Elf.zig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/link/Elf.zig b/src/link/Elf.zig
index 979798eeee..d02d98800d 100644
--- a/src/link/Elf.zig
+++ b/src/link/Elf.zig
@@ -775,6 +775,9 @@ pub fn loadInput(self: *Elf, input: link.Input) !void {
     const is_static_lib = self.base.isStaticLib();
 
     if (comp.verbose_link) {
+        comp.mutex.lock(); // protect comp.arena
+        defer comp.mutex.unlock();
+
         const argv = &self.dump_argv_list;
         switch (input) {
             .res => unreachable,