From 37ef2b2333ea18d17dd0aa0fd3c558b724ee71d4 Mon Sep 17 00:00:00 2001
From: Yota Toyama <raviqqe@gmail.com>
Date: Sat, 15 Jun 2024 14:36:58 +0900
Subject: [PATCH] Fix

---
 melior/src/pass/external.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/melior/src/pass/external.rs b/melior/src/pass/external.rs
index bf586ee88f..e881d87f4f 100644
--- a/melior/src/pass/external.rs
+++ b/melior/src/pass/external.rs
@@ -199,7 +199,10 @@ pub fn create_external<'c, T: RunExternalPass<'c>>(
                     *const (),
                     unsafe extern "C" fn(MlirOperation, MlirExternalPass, *mut c_void),
                 >(callback_run::<T> as *const ())),
-                clone: Some(transmute::<*const (), _>(callback_clone::<T> as *const ())),
+                clone: Some(transmute::<
+                    *const (),
+                    unsafe extern "C" fn(*mut c_void) -> *mut c_void,
+                >(callback_clone::<T> as *const ())),
             },
             Box::into_raw(Box::new(pass)) as _,
         ))