zig

commit 11de55d0ddd54afabb3e26a85adba0a1f0bbe35b (tree)
parent 63bd0fe58e80742d273a962c03145ce598f060b6
Author: Andrew Kelley <andrew@ziglang.org>
Date:   Tue, 14 Mar 2023 11:42:00 -0700

std.Build.Cache: handle ENOENT on createFile race

Companion commit to 628fec41593a2d2eca8b504e4fe90de9823aeded

Diffstat:
M
lib/std/Build/Cache.zig
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/std/Build/Cache.zig b/lib/std/Build/Cache.zig
@@ -422,7 +422,11 @@ pub const Manifest = struct {
                             self.have_exclusive_lock = true;
                             return false; // cache miss; exclusive lock already held
                         } else |err| switch (err) {
-                            error.WouldBlock => continue,
+                            // There are no dir components, so you would think
+                            // that this was unreachable, however we have
+                            // observed on macOS two processes racing to do
+                            // openat() with O_CREAT manifest in ENOENT.
+                            error.WouldBlock, error.FileNotFound => continue,
                             else => |e| return e,
                         }
                     },