From d0f675827c28b1d50e8aea6a7d29cb45ad8d4e67 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Wed, 1 Mar 2023 22:55:47 -0700
Subject: [PATCH] link: only write manifest if we have the exclusive lock

Fixes assertion tripping when racing multiple processes that will create
the same static archive.
---
 src/link.zig | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/link.zig b/src/link.zig
index a2f40eed65..96931dd79e 100644
--- a/src/link.zig
+++ b/src/link.zig
@@ -1078,9 +1078,11 @@ pub const File = struct {
                 log.warn("failed to save archive hash digest file: {s}", .{@errorName(err)});
             };
 
-            man.writeManifest() catch |err| {
-                log.warn("failed to write cache manifest when archiving: {s}", .{@errorName(err)});
-            };
+            if (man.have_exclusive_lock) {
+                man.writeManifest() catch |err| {
+                    log.warn("failed to write cache manifest when archiving: {s}", .{@errorName(err)});
+                };
+            }
 
             base.lock = man.toOwnedLock();
         }