From 7a13d57916aae2840047cc3461aa44c3a72ca546 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Wed, 28 Jan 2026 17:59:46 -0800
Subject: [PATCH] std.Io.Threaded: add missing check for pending status in
 batchCancel

---
 lib/std/Io/Threaded.zig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/std/Io/Threaded.zig b/lib/std/Io/Threaded.zig
index c9c38c6b29..05ff37b76e 100644
--- a/lib/std/Io/Threaded.zig
+++ b/lib/std/Io/Threaded.zig
@@ -2623,6 +2623,7 @@ fn batchCancel(userdata: ?*anyopaque, b: *Io.Batch) void {
             const metadatas_ptr: [*]WinOpMetadata = @ptrCast(@alignCast(reserved));
             const metadatas = metadatas_ptr[0..b.operations.len];
             for (metadatas, 0..) |*metadata, op| {
+                if (!metadata.pending) continue;
                 const done = @atomicLoad(windows.NTSTATUS, &metadata.iosb.u.Status, .acquire) != .PENDING;
                 if (done) continue;
                 switch (operations[op]) {
@@ -2633,6 +2634,7 @@ fn batchCancel(userdata: ?*anyopaque, b: *Io.Batch) void {
                 }
             }
             for (metadatas) |*metadata| {
+                if (!metadata.pending) continue;
                 while (@atomicLoad(windows.NTSTATUS, &metadata.iosb.u.Status, .acquire) == .PENDING) {
                     waitForApcOrAlert();
                 }