From dabf3da7e549714a2eeb3658f863c307ceabc5fe Mon Sep 17 00:00:00 2001
From: stasoid <stasoid@yahoo.com>
Date: Sun, 10 Nov 2024 15:16:59 +0500
Subject: [PATCH] LibCore: Fix bug in CreateFileMapping call

size >> 31 >> 1 is used instead of size >> 32 to support 32-bit Windows
(size_t is 32 bit there, and you cannot shift 32-bit value by 32 bits
on x86)
This is equivalent to sizeof(size) == 4 ? 0 : size >> 32
---
 Libraries/LibCore/AnonymousBufferWindows.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Libraries/LibCore/AnonymousBufferWindows.cpp b/Libraries/LibCore/AnonymousBufferWindows.cpp
index 91baddd0859..a0089a290ec 100644
--- a/Libraries/LibCore/AnonymousBufferWindows.cpp
+++ b/Libraries/LibCore/AnonymousBufferWindows.cpp
@@ -28,7 +28,7 @@ AnonymousBufferImpl::~AnonymousBufferImpl()
 
 ErrorOr<NonnullRefPtr<AnonymousBufferImpl>> AnonymousBufferImpl::create(size_t size)
 {
-    HANDLE map_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, HIWORD(size), LOWORD(size), NULL);
+    HANDLE map_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, size >> 31 >> 1, size & 0xFFFFFFFF, NULL);
     if (!map_handle)
         return Error::from_windows_error(GetLastError());