From f198b222bd8ed6fe426b0cf8b3008bed18e2e7ae Mon Sep 17 00:00:00 2001
From: Mads Marquart <mads@marquart.dk>
Date: Wed, 15 Nov 2023 02:15:33 +0100
Subject: [PATCH] macOS: Fix double-free of `NSWindow`

---
 CHANGELOG.md | 4 ++++
 src/cg.rs    | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index faadac29..5e300d0d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Unreleased
+
+- MacOS: Fix double-free of `NSWindow`.
+
 # 0.4.0
 
 - **Breaking:** Port to use `raw-window-handle` v0.6.(#132)
diff --git a/src/cg.rs b/src/cg.rs
index 97cc913b..9f6035a5 100644
--- a/src/cg.rs
+++ b/src/cg.rs
@@ -42,7 +42,8 @@ impl<D: HasDisplayHandle, W: HasWindowHandle> CGImpl<D, W> {
             _ => return Err(InitError::Unsupported(window_src)),
         };
         let view = handle.ns_view.as_ptr() as id;
-        let window = unsafe { msg_send![view, window] };
+        let window: id = unsafe { msg_send![view, window] };
+        let window: id = unsafe { msg_send![window, retain] };
         let layer = CALayer::new();
         unsafe {
             let subview: id = NSView::alloc(nil).initWithFrame_(NSView::frame(view));