From d694b8031ac765f8b645ab093925752e01db89a5 Mon Sep 17 00:00:00 2001
From: Stephen Gutekanst <stephen@hexops.com>
Date: Sun, 6 Nov 2022 15:02:55 -0700
Subject: [PATCH] glfw: ensure Window.from handle is untyped

Since users of the library do not have access to the `@cImport` struct (and we
do not want to expose that), the user may pass only an untyped `*anyopaque` pointer
which we'll internally cast to `*c.GLFWwindow`.

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
---
 libs/glfw/src/Window.zig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libs/glfw/src/Window.zig b/libs/glfw/src/Window.zig
index bea54ab4..be447d6e 100644
--- a/libs/glfw/src/Window.zig
+++ b/libs/glfw/src/Window.zig
@@ -23,8 +23,8 @@ const Window = @This();
 handle: *c.GLFWwindow,
 
 /// Returns a Zig GLFW window from an underlying C GLFW window handle.
-pub inline fn from(handle: *c.GLFWwindow) Window {
-    return Window{ .handle = handle };
+pub inline fn from(handle: *anyopaque) Window {
+    return Window{ .handle = @ptrCast(*c.GLFWwindow, @alignCast(@alignOf(*c.GLFWwindow), handle)) };
 }
 
 /// Resets all window hints to their default values.