From fba4ade234f0eabd96b13c4784315ce70e9a49e2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Laignel?= <francois@centricular.com>
Date: Thu, 7 Nov 2024 09:36:18 +0100
Subject: [PATCH] glib: fix userdata mutability for FnMut callbacks

---
 glib/src/source.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/glib/src/source.rs b/glib/src/source.rs
index ba0ba5f7e85d..d410d6993034 100644
--- a/glib/src/source.rs
+++ b/glib/src/source.rs
@@ -1092,9 +1092,9 @@ where
         ffi::g_source_set_callback(
             source,
             Some(transmute::<
-                *const (),
+                *mut (),
                 unsafe extern "C" fn(ffi::gpointer) -> ffi::gboolean,
-            >(trampoline_child_watch::<F> as *const ())),
+            >(trampoline_child_watch::<F> as *mut ())),
             into_raw_child_watch(func),
             Some(destroy_closure_child_watch::<F>),
         );