From faca69a1d6f010851d64f5ce5349d9ba747e0912 Mon Sep 17 00:00:00 2001
From: Jookia <contact@jookia.org>
Date: Fri, 3 Jul 2026 03:55:59 +1000
Subject: [PATCH] CopyFileEx: Actually set the file size

Fixes: ed557a81b9ee3c38802ed6fc442dc85f323b4266
---
 library/std/src/sys/pal/windows/c.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/library/std/src/sys/pal/windows/c.rs b/library/std/src/sys/pal/windows/c.rs
index c9074bb780db7..0f0dc7b592dd0 100644
--- a/library/std/src/sys/pal/windows/c.rs
+++ b/library/std/src/sys/pal/windows/c.rs
@@ -820,6 +820,7 @@ compat_fn_with_fallback! {
         if low32 == INVALID_FILE_SIZE && unsafe { GetLastError() } != NO_ERROR {
             FALSE
         } else {
+            unsafe { *lpfilesize = full_size as i64 };
             TRUE
         }
     }