From f05bf957c26c8fa8f91c89f72bf9da14d2f7fdd8 Mon Sep 17 00:00:00 2001
From: Langston Barrett <langston.barrett@gmail.com>
Date: Thu, 20 Nov 2025 14:29:55 +0000
Subject: [PATCH 1/4] libafl_qemu: Sprinkle some `#[must_use]` on `Emulator`
 getters

There is no point to calling these methods without using the return
values.
---
 crates/libafl_qemu/src/executor.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/crates/libafl_qemu/src/executor.rs b/crates/libafl_qemu/src/executor.rs
index 7b544a2402..043cf9ffb1 100644
--- a/crates/libafl_qemu/src/executor.rs
+++ b/crates/libafl_qemu/src/executor.rs
@@ -279,6 +279,7 @@ where
         })
     }
 
+    #[must_use]
     pub fn inner(&self) -> &EmulatorInProcessExecutor<C, CM, ED, EM, ET, H, I, OT, S, SM, Z> {
         &self.inner
     }
@@ -288,6 +289,7 @@ where
         BREAK_ON_TMOUT.store(true, Ordering::Release);
     }
 
+    #[must_use]
     pub fn inner_mut(
         &mut self,
     ) -> &mut EmulatorInProcessExecutor<C, CM, ED, EM, ET, H, I, OT, S, SM, Z> {
@@ -432,21 +434,25 @@ where
     }
 
     #[allow(clippy::type_complexity)]
+    #[must_use]
     pub fn inner(&self) -> &QemuInProcessForkExecutor<C, CM, ED, EM, ET, H, I, OT, S, SM, SP, Z> {
         &self.inner
     }
 
     #[allow(clippy::type_complexity)]
+    #[must_use]
     pub fn inner_mut(
         &mut self,
     ) -> &mut QemuInProcessForkExecutor<C, CM, ED, EM, ET, H, I, OT, S, SM, SP, Z> {
         &mut self.inner
     }
 
+    #[must_use]
     pub fn emulator(&self) -> &Emulator<C, CM, ED, ET, I, S, SM> {
         &self.inner.exposed_executor_state
     }
 
+    #[must_use]
     pub fn emulator_mut(&mut self) -> &Emulator<C, CM, ED, ET, I, S, SM> {
         &mut self.inner.exposed_executor_state
     }

From 3743a7776a539cea7216ac6b6f058099191005c6 Mon Sep 17 00:00:00 2001
From: Langston Barrett <langston.barrett@gmail.com>
Date: Thu, 20 Nov 2025 14:34:31 +0000
Subject: [PATCH 2/4] Add `into_state` for stateful executors

---
 crates/libafl/src/executors/inprocess/stateful.rs      | 7 +++++++
 crates/libafl/src/executors/inprocess_fork/stateful.rs | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/crates/libafl/src/executors/inprocess/stateful.rs b/crates/libafl/src/executors/inprocess/stateful.rs
index f95d41e4cb..99d175a32c 100644
--- a/crates/libafl/src/executors/inprocess/stateful.rs
+++ b/crates/libafl/src/executors/inprocess/stateful.rs
@@ -306,6 +306,13 @@ where
     pub fn hooks_mut(&mut self) -> &mut (InProcessHooks<I, S>, HT) {
         self.inner.hooks_mut()
     }
+
+    /// Retrieve the state, consuming the executor.
+    #[inline]
+    #[must_use]
+    pub fn into_state(self) -> ES {
+        self.exposed_executor_state
+    }
 }
 
 impl<EM, ES, H, HB, HT, I, OT, S, Z> HasInProcessHooks<I, S>
diff --git a/crates/libafl/src/executors/inprocess_fork/stateful.rs b/crates/libafl/src/executors/inprocess_fork/stateful.rs
index 30293047f3..cb74846bae 100644
--- a/crates/libafl/src/executors/inprocess_fork/stateful.rs
+++ b/crates/libafl/src/executors/inprocess_fork/stateful.rs
@@ -181,6 +181,13 @@ where
     pub fn harness_mut(&mut self) -> &mut H {
         &mut self.harness_fn
     }
+
+    /// Retrieve the state, consuming the executor.
+    #[inline]
+    #[must_use]
+    pub fn into_state(self) -> ES {
+        self.exposed_executor_state
+    }
 }
 
 impl<H, HT, I, OT, S, SP, EM, ES, Z> HasObservers

From 23deb072a8371283c6fdbec3510fd11d1966fb98 Mon Sep 17 00:00:00 2001
From: Langston Barrett <langston.barrett@gmail.com>
Date: Thu, 20 Nov 2025 14:35:27 +0000
Subject: [PATCH 3/4] Sprinkle some `#[must_use]` on
 `Stateful...InProcessExecutor` getters

---
 crates/libafl/src/executors/inprocess/stateful.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/crates/libafl/src/executors/inprocess/stateful.rs b/crates/libafl/src/executors/inprocess/stateful.rs
index 99d175a32c..7a3056659a 100644
--- a/crates/libafl/src/executors/inprocess/stateful.rs
+++ b/crates/libafl/src/executors/inprocess/stateful.rs
@@ -285,24 +285,28 @@ where
 
     /// Retrieve the harness function.
     #[inline]
+    #[must_use]
     pub fn harness(&self) -> &H {
         self.harness_fn.borrow()
     }
 
     /// Retrieve the harness function for a mutable reference.
     #[inline]
+    #[must_use]
     pub fn harness_mut(&mut self) -> &mut H {
         self.harness_fn.borrow_mut()
     }
 
     /// The inprocess handlers
     #[inline]
+    #[must_use]
     pub fn hooks(&self) -> &(InProcessHooks<I, S>, HT) {
         self.inner.hooks()
     }
 
     /// The inprocess handlers (mutable)
     #[inline]
+    #[must_use]
     pub fn hooks_mut(&mut self) -> &mut (InProcessHooks<I, S>, HT) {
         self.inner.hooks_mut()
     }

From 78a4c6620590bacfc9e658a673530e532ef3106c Mon Sep 17 00:00:00 2001
From: Langston Barrett <langston.barrett@gmail.com>
Date: Thu, 20 Nov 2025 14:39:10 +0000
Subject: [PATCH 4/4] libafl_qemu: Add `into_emulator` for executors

---
 crates/libafl_qemu/src/executor.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/crates/libafl_qemu/src/executor.rs b/crates/libafl_qemu/src/executor.rs
index 043cf9ffb1..768ba9c274 100644
--- a/crates/libafl_qemu/src/executor.rs
+++ b/crates/libafl_qemu/src/executor.rs
@@ -295,6 +295,13 @@ where
     ) -> &mut EmulatorInProcessExecutor<C, CM, ED, EM, ET, H, I, OT, S, SM, Z> {
         &mut self.inner
     }
+
+    /// Retrieve the emulator, consuming the executor.
+    #[inline]
+    #[must_use]
+    pub fn into_emulator(self) -> Emulator<C, CM, ED, ET, I, S, SM> {
+        self.inner.into_state()
+    }
 }
 
 impl<C, CM, ED, EM, ET, H, I, OT, S, SM, Z> Executor<EM, I, S, Z>
@@ -456,6 +463,13 @@ where
     pub fn emulator_mut(&mut self) -> &Emulator<C, CM, ED, ET, I, S, SM> {
         &mut self.inner.exposed_executor_state
     }
+
+    /// Retrieve the emulator, consuming the executor.
+    #[inline]
+    #[must_use]
+    pub fn into_emulator(self) -> Emulator<C, CM, ED, ET, I, S, SM> {
+        self.inner.into_state()
+    }
 }
 
 #[cfg(feature = "fork")]