Move all unnecessary std uses to core,alloc (#3027)

* Move all unnecessary std uses to core,alloc

* More

* more fix

* more

* more

* Remove libafl-fuzz grimoire

* more

* more

* more cleanup

* remove bins

* fix

* more fix

.gitignore

@@ -76,3 +76,6 @@ program
 fuzzer_libpng*
 
 *.patch
+
+# Sometimes this happens
+rustc-ice-*

Cargo.toml

@@ -148,6 +148,10 @@ all = { level = "deny", priority = -1 }
 pedantic = { level = "deny", priority = -1 }
 cargo_common_metadata = "deny"
 
+alloc_instead_of_core = "deny"
+std_instead_of_alloc = "deny"
+std_instead_of_core = "deny"
+
 # Warn
 cargo = { level = "warn", priority = -1 }
 

fuzzers/binary_only/qemu_launcher/injection_test/.gitignore

@@ -0,0 +1,2 @@
+injection_test
+static

libafl/examples/tui_mock/main.rs

@@ -1,7 +1,8 @@
 //! An example for TUI that uses the TUI without any real data.
 //! This is mainly to fix the UI without having to run a real fuzzer.
 
-use std::{thread::sleep, time::Duration};
+use core::time::Duration;
+use std::thread::sleep;
 
 use libafl::monitors::{
     Monitor,

libafl/src/common/nautilus/grammartec/chunkstore.rs

@@ -1,9 +1,6 @@
 use alloc::{string::String, vec::Vec};
-use std::{
-    fs::File,
-    io::Write,
-    sync::{RwLock, atomic::AtomicBool},
-};
+use core::sync::atomic::AtomicBool;
+use std::{fs::File, io::Write, sync::RwLock};
 
 use hashbrown::{HashMap, HashSet};
 use libafl_bolts::rands::Rand;

libafl/src/common/nautilus/grammartec/newtypes.rs

@@ -1,4 +1,4 @@
-use std::ops::Add;
+use core::ops::Add;
 
 use serde::{Deserialize, Serialize};
 

libafl/src/common/nautilus/grammartec/python_grammar_loader.rs

@@ -1,6 +1,6 @@
 #![allow(clippy::useless_conversion)] // This seems to be a false-positive(?)
 
-use std::{ffi::CString, string::String, vec::Vec};
+use alloc::{ffi::CString, string::String, vec::Vec};
 
 use pyo3::{prelude::*, pyclass, types::IntoPyDict};
 

libafl/src/common/nautilus/grammartec/recursion_info.rs

@@ -1,5 +1,4 @@
-use alloc::vec::Vec;
-use std::fmt;
+use alloc::{fmt, vec::Vec};
 
 use hashbrown::HashMap;
 use libafl_bolts::{

libafl/src/common/nautilus/grammartec/rule.rs

@@ -25,7 +25,7 @@ static SPLITTER: OnceLock<regex::Regex> = OnceLock::new();
 static TOKENIZER: OnceLock<regex::bytes::Regex> = OnceLock::new();
 
 fn show_bytes(bs: &[u8]) -> String {
-    use std::{ascii::escape_default, str};
+    use core::{ascii::escape_default, str};
 
     let mut visible = String::new();
     for &b in bs {
@@ -265,7 +265,7 @@ impl Rule {
                 if let Some(sub) = cap.get(1) {
                     //println!("cap.get(1): {}", sub.as_str());
                     RuleChild::from_nt(
-                        std::str::from_utf8(sub.as_bytes())
+                        core::str::from_utf8(sub.as_bytes())
                             .expect("nonterminals need to be valid strings"),
                         ctx,
                     )

libafl/src/common/nautilus/grammartec/tree.rs

@@ -1,5 +1,6 @@
 use alloc::vec::Vec;
-use std::{cmp, io, io::Write, marker::Sized};
+use core::{cmp, marker::Sized};
+use std::io::{Cursor, Write, stdout};
 
 use hashbrown::HashSet;
 use libafl_bolts::rands::Rand;
@@ -28,7 +29,7 @@ enum UnparseStep<'dat> {
 struct Unparser<'data, 'tree: 'data, 'ctx: 'data, W: Write, T: TreeLike> {
     tree: &'tree T,
     stack: Vec<UnparseStep<'data>>,
-    buffers: Vec<io::Cursor<Vec<u8>>>,
+    buffers: Vec<Cursor<Vec<u8>>>,
     w: W,
     i: usize,
     ctx: &'ctx Context,
@@ -81,10 +82,7 @@ impl<'data, 'tree: 'data, 'ctx: 'data, W: Write, T: TreeLike> Unparser<'data, 't
     }
     fn script(&mut self, py: Python, num: usize, expr: &PyObject) -> PyResult<()> {
         let bufs = self.buffers.split_off(self.buffers.len() - num);
-        let bufs = bufs
-            .into_iter()
-            .map(io::Cursor::into_inner)
-            .collect::<Vec<_>>();
+        let bufs = bufs.into_iter().map(Cursor::into_inner).collect::<Vec<_>>();
         let byte_arrays = bufs.iter().map(|b| PyBytes::new(py, b));
         let res = expr.call1(py, PyTuple::new(py, byte_arrays)?)?;
         let bound = res.bind(py);
@@ -103,7 +101,7 @@ impl<'data, 'tree: 'data, 'ctx: 'data, W: Write, T: TreeLike> Unparser<'data, 't
     }
 
     fn push_buffer(&mut self) {
-        self.buffers.push(io::Cursor::new(vec![]));
+        self.buffers.push(Cursor::new(vec![]));
     }
 
     fn next_rule(&mut self, nt: NTermId) {
@@ -184,7 +182,7 @@ where
     }
 
     fn unparse_print(&self, ctx: &Context) {
-        self.unparse_to(ctx, &mut io::stdout());
+        self.unparse_to(ctx, &mut stdout());
     }
 }
 

libafl/src/common/nautilus/regex_mutator/mod.rs

@@ -59,7 +59,7 @@ fn append_unicode_range<R: Rand>(
     let a = u32::from_le_bytes(chr_a_buf);
     let b = u32::from_le_bytes(chr_b_buf);
     let c = scr.get_range(rand, a as usize, (b + 1) as usize) as u32;
-    append_char(res, std::char::from_u32(c).unwrap());
+    append_char(res, core::char::from_u32(c).unwrap());
 }
 
 fn append_byte_range<R: Rand>(

libafl/src/events/broker_hooks/centralized_multi_machine.rs

@@ -1,9 +1,8 @@
-use std::{
+use alloc::{sync::Arc, vec::Vec};
+use core::{
     fmt::{Debug, Display},
     marker::PhantomData,
     slice,
-    sync::Arc,
-    vec::Vec,
 };
 
 #[cfg(feature = "llmp_compression")]

libafl/src/events/launcher.rs

@@ -12,12 +12,13 @@
 //! On `Unix` systems, the [`Launcher`] will use `fork` if the `fork` feature is used for `LibAFL`.
 //! Else, it will start subsequent nodes with the same commandline, and will set special `env` variables accordingly.
 
+use alloc::string::String;
 use core::{
     fmt::{self, Debug, Formatter},
+    net::SocketAddr,
     num::NonZeroUsize,
     time::Duration,
 };
-use std::{net::SocketAddr, string::String};
 
 use libafl_bolts::{
     core_affinity::{CoreId, Cores},
@@ -32,13 +33,13 @@ use {
         events::{CentralizedLlmpHook, StdLlmpEventHook, centralized::CentralizedEventManager},
         inputs::Input,
     },
+    alloc::boxed::Box,
     alloc::string::ToString,
     libafl_bolts::{
         core_affinity::get_core_ids,
         llmp::{Broker, Brokers, LlmpBroker},
         os::{ForkResult, fork},
     },
-    std::boxed::Box,
 };
 #[cfg(unix)]
 use {

libafl/src/events/llmp/restarting.rs

@@ -8,11 +8,11 @@ use alloc::string::ToString;
 use alloc::vec::Vec;
 use core::{
     marker::PhantomData,
+    net::SocketAddr,
     num::NonZeroUsize,
     sync::atomic::{Ordering, compiler_fence},
     time::Duration,
 };
-use std::net::SocketAddr;
 #[cfg(feature = "std")]
 use std::net::TcpStream;
 

libafl/src/events/multi_machine.rs

@@ -1,16 +1,10 @@
-use core::fmt::Display;
-use std::{
-    boxed::Box,
-    collections::HashMap,
-    io::ErrorKind,
-    process,
-    sync::{
-        Arc, OnceLock,
-        atomic::{AtomicU64, Ordering},
-    },
+use alloc::{boxed::Box, sync::Arc, vec::Vec};
+use core::{
+    fmt::Display,
+    sync::atomic::{AtomicU64, Ordering},
     time::Duration,
-    vec::Vec,
 };
+use std::{collections::HashMap, io::ErrorKind, process, sync::OnceLock};
 
 use enumflags2::{BitFlags, bitflags};
 #[cfg(feature = "llmp_compression")]
@@ -407,9 +401,9 @@ where
 
     /// Write an [`OwnedTcpMultiMachineMsg`] to a stream.
     /// Can be read back using [`TcpMultiMachineState::read_msg`].
-    async fn write_msg<'a, I: Input>(
+    async fn write_msg<I: Input>(
         stream: &mut TcpStream,
-        msg: &MultiMachineMsg<'a, I>,
+        msg: &MultiMachineMsg<'_, I>,
     ) -> Result<(), Error> {
         let serialized_msg = msg.serialize_as_ref();
         let msg_len = u32::to_le_bytes(serialized_msg.len() as u32);
@@ -451,9 +445,9 @@ where
         Ok(())
     }
 
-    pub(crate) async fn send_interesting_event_to_nodes<'a, I: Input>(
+    pub(crate) async fn send_interesting_event_to_nodes<I: Input>(
         &mut self,
-        msg: &MultiMachineMsg<'a, I>,
+        msg: &MultiMachineMsg<'_, I>,
     ) -> Result<(), Error> {
         log::debug!("Sending interesting events to nodes...");
 
@@ -503,9 +497,9 @@ where
 
     /// Flush the message queue from other nodes and add incoming events to the
     /// centralized event manager queue.
-    pub(crate) async fn receive_new_messages_from_nodes<'a, I: Input>(
+    pub(crate) async fn receive_new_messages_from_nodes<I: Input>(
         &mut self,
-        msgs: &mut Vec<MultiMachineMsg<'a, I>>,
+        msgs: &mut Vec<MultiMachineMsg<'_, I>>,
     ) -> Result<(), Error> {
         log::debug!("Checking for new events from other nodes...");
         // let mut nb_received = 0usize;

libafl/src/events/tcp.rs

@@ -1,8 +1,9 @@
 //! TCP-backed event manager for scalable multi-processed fuzzing
 
-use alloc::vec::Vec;
+use alloc::{sync::Arc, vec::Vec};
 use core::{
     marker::PhantomData,
+    net::SocketAddr,
     num::NonZeroUsize,
     sync::atomic::{Ordering, compiler_fence},
     time::Duration,
@@ -10,8 +11,7 @@ use core::{
 use std::{
     env,
     io::{ErrorKind, Read, Write},
-    net::{SocketAddr, TcpListener, TcpStream, ToSocketAddrs},
-    sync::Arc,
+    net::{TcpListener, TcpStream, ToSocketAddrs},
 };
 
 #[cfg(feature = "tcp_compression")]

libafl/src/executors/command.rs

@@ -1,22 +1,23 @@
 //! The command executor executes a sub program for each run
+#[cfg(all(feature = "intel_pt", target_os = "linux"))]
+use alloc::ffi::CString;
 use alloc::vec::Vec;
+#[cfg(all(feature = "intel_pt", target_os = "linux"))]
+use core::ffi::CStr;
 use core::{
     fmt::{self, Debug, Formatter},
     marker::PhantomData,
     ops::IndexMut,
+    time::Duration,
 };
 #[cfg(all(feature = "intel_pt", target_os = "linux"))]
-use std::{
-    ffi::{CStr, CString},
-    os::fd::AsRawFd,
-};
+use std::os::fd::AsRawFd;
 use std::{
     ffi::{OsStr, OsString},
     io::{Read, Write},
     os::unix::ffi::OsStrExt,
     path::{Path, PathBuf},
     process::{Child, Command, Stdio},
-    time::Duration,
 };
 
 #[cfg(all(feature = "intel_pt", target_os = "linux"))]

libafl/src/executors/hooks/inprocess.rs

@@ -464,7 +464,7 @@ impl InProcessExecutorHandlerData {
                     );
 
                     if let Ok(bsod) = bsod {
-                        if let Ok(r) = std::str::from_utf8(&bsod) {
+                        if let Ok(r) = core::str::from_utf8(&bsod) {
                             log::error!("{}", r);
                         }
                     }

libafl/src/executors/hooks/unix.rs

@@ -238,7 +238,7 @@ pub mod unix_signal_handler {
                         }
                         let _ = writer.flush();
                     }
-                    if let Ok(r) = std::str::from_utf8(&bsod) {
+                    if let Ok(r) = core::str::from_utf8(&bsod) {
                         log::error!("{}", r);
                     }
                 }
@@ -278,7 +278,7 @@ pub mod unix_signal_handler {
                             }
                             let _ = writer.flush();
                         }
-                        if let Ok(r) = std::str::from_utf8(&bsod) {
+                        if let Ok(r) = core::str::from_utf8(&bsod) {
                             log::error!("{}", r);
                         }
                     }

libafl/src/feedbacks/capture_feedback.rs

@@ -1,5 +1,6 @@
 //! Feedback that captures Timeouts for re-running
-use std::{borrow::Cow, cell::RefCell, fmt::Debug, rc::Rc};
+use alloc::{borrow::Cow, rc::Rc};
+use core::{cell::RefCell, fmt::Debug};
 
 use libafl_bolts::{Error, Named};
 use serde::{Serialize, de::DeserializeOwned};

libafl/src/feedbacks/nautilus.rs

@@ -25,7 +25,7 @@ pub struct NautilusChunksMetadata {
 }
 
 impl Debug for NautilusChunksMetadata {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         write!(
             f,
             "NautilusChunksMetadata {{ {} }}",

libafl/src/feedbacks/new_hash_feedback.rs

@@ -1,7 +1,7 @@
 //! The [`NewHashFeedback`] uses the backtrace hash and a hashset to only keep novel cases
 
 use alloc::{borrow::Cow, string::ToString};
-use std::fmt::Debug;
+use core::fmt::Debug;
 
 use hashbrown::HashSet;
 use libafl_bolts::{

libafl/src/fuzzer/mod.rs

@@ -1,9 +1,9 @@
 //! The `Fuzzer` is the main struct for a fuzz campaign.
 
 use alloc::{string::ToString, vec::Vec};
-use core::{fmt::Debug, time::Duration};
 #[cfg(feature = "std")]
-use std::hash::Hash;
+use core::hash::Hash;
+use core::{fmt::Debug, time::Duration};
 
 #[cfg(feature = "std")]
 use fastbloom::BloomFilter;

libafl/src/generators/nautilus.rs

@@ -21,7 +21,7 @@ pub struct NautilusContext {
 }
 
 impl Debug for NautilusContext {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         write!(f, "NautilusContext {{}}",)
     }
 }
@@ -114,7 +114,7 @@ pub struct NautilusGenerator<'a> {
 }
 
 impl Debug for NautilusGenerator<'_> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         write!(f, "NautilusGenerator {{}}",)
     }
 }

libafl/src/inputs/multi.rs

@@ -1,7 +1,7 @@
 //! An input composed of multiple parts identified by a key.
 
-use alloc::{fmt::Debug, string::String, vec::Vec};
-use core::hash::Hash;
+use alloc::{string::String, vec::Vec};
+use core::{fmt::Debug, hash::Hash};
 
 use serde::{Serialize, de::DeserializeOwned};
 

libafl/src/inputs/nautilus.rs

@@ -1,7 +1,9 @@
 //! Input for the [`Nautilus`](https://github.com/RUB-SysSec/nautilus) grammar fuzzer methods
 use alloc::{rc::Rc, vec::Vec};
-use core::cell::RefCell;
-use std::hash::{Hash, Hasher};
+use core::{
+    cell::RefCell,
+    hash::{Hash, Hasher},
+};
 
 use libafl_bolts::{HasLen, ownedref::OwnedSlice};
 use serde::{Deserialize, Serialize};

libafl/src/inputs/value.rs

@@ -138,8 +138,8 @@ where
 mod tests {
     #[cfg(feature = "std")]
     use {
-        super::ValueInput, crate::mutators::numeric::Numeric, alloc::fmt::Debug,
-        std::any::type_name,
+        super::ValueInput, crate::mutators::numeric::Numeric, core::any::type_name,
+        core::fmt::Debug,
     };
 
     #[cfg(feature = "std")]

libafl/src/monitors/mod.rs

@@ -29,10 +29,13 @@ pub mod prometheus;
 #[cfg(feature = "statsd_monitor")]
 pub mod statsd;
 
-use alloc::fmt::Debug;
 #[cfg(feature = "std")]
 use alloc::vec::Vec;
-use core::{fmt, fmt::Write, time::Duration};
+use core::{
+    fmt,
+    fmt::{Debug, Write},
+    time::Duration,
+};
 
 use libafl_bolts::ClientId;
 #[cfg(feature = "prometheus_monitor")]

libafl/src/monitors/prometheus.rs

@@ -27,13 +27,18 @@
 //!
 //! When using docker, you may need to point `prometheus.yml` to the `docker0` interface or `host.docker.internal`
 
-use alloc::{borrow::Cow, fmt::Debug, string::String};
-use core::{fmt, fmt::Write, time::Duration};
-use std::{
-    string::ToString,
-    sync::{Arc, atomic::AtomicU64},
-    thread,
+use alloc::{
+    borrow::Cow,
+    string::{String, ToString},
+    sync::Arc,
 };
+use core::{
+    fmt,
+    fmt::{Debug, Write},
+    sync::atomic::AtomicU64,
+    time::Duration,
+};
+use std::thread;
 
 // using thread in order to start the HTTP server in a separate thread
 use futures::executor::block_on;

libafl/src/monitors/tui/mod.rs

@@ -2,17 +2,21 @@
 //!
 //! It's based on [ratatui](https://ratatui.rs/)
 
-use alloc::{borrow::Cow, boxed::Box, string::ToString};
-use std::{
+use alloc::{
+    borrow::Cow,
+    boxed::Box,
     collections::VecDeque,
-    fmt::Write as _,
+    string::{String, ToString},
+    sync::Arc,
+    vec::Vec,
+};
+use core::{fmt::Write as _, time::Duration};
+use std::{
     io::{self, BufRead, Write},
     panic,
-    string::String,
-    sync::{Arc, RwLock},
+    sync::RwLock,
     thread,
-    time::{Duration, Instant},
-    vec::Vec,
+    time::Instant,
 };
 
 use crossterm::{

libafl/src/monitors/tui/ui.rs

@@ -1,9 +1,7 @@
 //! The UI-specific parts of [`super::TuiMonitor`]
-use alloc::{string::ToString, vec::Vec};
-use std::{
-    cmp::{max, min},
-    sync::{Arc, RwLock},
-};
+use alloc::{string::ToString, sync::Arc, vec::Vec};
+use core::cmp::{max, min};
+use std::sync::RwLock;
 
 use ratatui::{
     Frame,

libafl/src/mutators/hash.rs

@@ -1,6 +1,7 @@
 //! A wrapper around a [`Mutator`] that ensures an input really changed [`MutationResult::Mutated`]
 //! by hashing pre- and post-mutation
-use std::{borrow::Cow, hash::Hash};
+use alloc::borrow::Cow;
+use core::hash::Hash;
 
 use libafl_bolts::{Error, Named, generic_hash_std};
 

libafl/src/mutators/nautilus.rs

@@ -29,7 +29,7 @@ pub struct NautilusRandomMutator<'a> {
 }
 
 impl Debug for NautilusRandomMutator<'_> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         write!(f, "NautilusRandomMutator {{}}")
     }
 }
@@ -91,7 +91,7 @@ pub struct NautilusRecursionMutator<'a> {
 }
 
 impl Debug for NautilusRecursionMutator<'_> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         write!(f, "NautilusRecursionMutator {{}}")
     }
 }
@@ -155,7 +155,7 @@ pub struct NautilusSpliceMutator<'a> {
 }
 
 impl Debug for NautilusSpliceMutator<'_> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         write!(f, "NautilusSpliceMutator {{}}")
     }
 }

libafl/src/mutators/token_mutations.rs

@@ -2130,7 +2130,7 @@ token2="B"
         let taint_len = 0;
         let input_len = 0;
         let hshape = 0;
-        let mut vec = std::vec::Vec::new();
+        let mut vec = alloc::vec::Vec::new();
 
         let _res = rq.cmp_extend_encoding(
             pattern,

libafl/src/observers/concolic/metadata.rs

@@ -16,7 +16,7 @@ impl ConcolicMetadata {
     /// Iterates over all messages in the buffer. Does not consume the buffer.
     pub fn iter_messages(&self) -> impl Iterator<Item = (SymExprRef, SymExpr)> + '_ {
         let mut parser = MessageFileReader::from_buffer(&self.buffer);
-        std::iter::from_fn(move || parser.next_message()).flatten()
+        core::iter::from_fn(move || parser.next_message()).flatten()
     }
 
     pub(crate) fn from_buffer(buffer: Vec<u8>) -> Self {

libafl/src/observers/concolic/serialization_format.rs

@@ -42,10 +42,8 @@
 //!
 //! ... making for a total of 5 bytes.
 
-use std::{
-    fmt::{self, Debug, Formatter},
-    io::{self, Cursor, Read, Seek, SeekFrom, Write},
-};
+use core::fmt::{self, Debug, Formatter};
+use std::io::{self, Cursor, Read, Seek, SeekFrom, Write};
 
 use bincode::{DefaultOptions, Options};
 pub use bincode::{ErrorKind, Result};

libafl/src/observers/stacktrace.rs

@@ -1,14 +1,14 @@
 //! the ``StacktraceObserver`` looks up the stacktrace on the execution thread and computes a hash for it for dedupe
 
-use alloc::{borrow::Cow, string::String, vec::Vec};
 #[cfg(feature = "casr")]
+use alloc::string::ToString;
+use alloc::{borrow::Cow, string::String, vec::Vec};
+use core::fmt::Debug;
+#[cfg(feature = "casr")]
+use core::hash::{Hash, Hasher};
+#[cfg(feature = "casr")]
+use std::collections::hash_map::DefaultHasher;
 use std::{
-    collections::hash_map::DefaultHasher,
-    hash::{Hash, Hasher},
-    string::ToString,
-};
-use std::{
-    fmt::Debug,
     fs::{self, File},
     io::Read,
     path::Path,

libafl/src/observers/stdio.rs

@@ -7,9 +7,8 @@
     doc = r"For example, they are supported on the [`crate::executors::CommandExecutor`]."
 )]
 
-use alloc::borrow::Cow;
+use alloc::{borrow::Cow, vec::Vec};
 use core::marker::PhantomData;
-use std::vec::Vec;
 
 use libafl_bolts::Named;
 use serde::{Deserialize, Serialize};

libafl/src/stages/afl_stats.rs

@@ -1,9 +1,7 @@
 //! Stage to compute and report AFL++ stats
-use alloc::{string::String, vec::Vec};
-use core::{marker::PhantomData, time::Duration};
+use alloc::{borrow::Cow, string::String, vec::Vec};
+use core::{fmt::Display, marker::PhantomData, time::Duration};
 use std::{
-    borrow::Cow,
-    fmt::Display,
     fs::{File, OpenOptions},
     io::{BufRead, BufReader, Write},
     path::{Path, PathBuf},
@@ -563,7 +561,7 @@ where
 }
 
 impl Display for AFLPlotData<'_> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         write!(f, "{},", self.relative_time)?;
         write!(f, "{},", self.cycles_done)?;
         write!(f, "{},", self.cur_item)?;
@@ -586,7 +584,7 @@ impl AFLPlotData<'_> {
     }
 }
 impl Display for AFLFuzzerStats<'_> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
         writeln!(f, "start_time        : {}", &self.start_time)?;
         writeln!(f, "start_time        : {}", &self.start_time)?;
         writeln!(f, "last_update       : {}", &self.last_update)?;

libafl/src/stages/dump.rs

@@ -1,12 +1,14 @@
 //! The [`DumpToDiskStage`] is a stage that dumps the corpus and the solutions to disk to e.g. allow AFL to sync
 
-use alloc::vec::Vec;
+use alloc::{
+    string::{String, ToString},
+    vec::Vec,
+};
 use core::{clone::Clone, marker::PhantomData};
 use std::{
     fs::{self, File},
     io::Write,
     path::{Path, PathBuf},
-    string::{String, ToString},
 };
 
 use libafl_bolts::impl_serdeany;

libafl/src/stages/time_tracker.rs

@@ -1,5 +1,5 @@
 //! Stage that wraps another stage and tracks it's execution time in `State`
-use std::{marker::PhantomData, time::Duration};
+use core::{marker::PhantomData, time::Duration};
 
 use libafl_bolts::{Error, current_time};
 

libafl/src/stages/verify_timeouts.rs

@@ -3,8 +3,8 @@
 //! Note: To capture the timeouts, use in conjunction with `CaptureTimeoutFeedback`
 //! Note: Will NOT work with in process executors due to the potential for restarts/crashes when
 //! running inputs.
-use core::time::Duration;
-use std::{cell::RefCell, collections::VecDeque, fmt::Debug, marker::PhantomData, rc::Rc};
+use alloc::{collections::VecDeque, rc::Rc};
+use core::{cell::RefCell, fmt::Debug, marker::PhantomData, time::Duration};
 
 use libafl_bolts::Error;
 use serde::{Deserialize, Serialize, de::DeserializeOwned};

libafl_bolts/examples/llmp_test/main.rs

@@ -3,11 +3,13 @@ This shows how llmp can be used directly, without libafl abstractions
 */
 extern crate alloc;
 
+use core::marker::PhantomData;
+#[cfg(all(feature = "std", not(target_os = "haiku")))]
+use core::num::NonZeroUsize;
 #[cfg(not(target_os = "haiku"))]
 use core::time::Duration;
-use std::marker::PhantomData;
 #[cfg(all(feature = "std", not(target_os = "haiku")))]
-use std::{num::NonZeroUsize, thread, time};
+use std::{thread, time};
 
 use libafl_bolts::llmp::{LlmpBrokerInner, LlmpMsgHookResult};
 #[cfg(all(feature = "std", not(target_os = "haiku")))]
@@ -37,7 +39,7 @@ const SLEEP_BETWEEN_FORWARDS: Duration = Duration::from_millis(5);
 static LOGGER: SimpleStderrLogger = SimpleStderrLogger::new();
 
 #[cfg(all(feature = "std", not(target_os = "haiku")))]
-fn adder_loop(port: u16) -> Result<(), Box<dyn std::error::Error>> {
+fn adder_loop(port: u16) -> Result<(), Box<dyn core::error::Error>> {
     let shmem_provider = StdShMemProvider::new()?;
     let mut client = llmp::LlmpClient::create_attach_to_tcp(shmem_provider, port)?;
     let mut last_result: u32 = 0;
@@ -75,7 +77,7 @@ fn adder_loop(port: u16) -> Result<(), Box<dyn std::error::Error>> {
 }
 
 #[cfg(all(feature = "std", not(target_os = "haiku")))]
-fn large_msg_loop(port: u16) -> Result<(), Box<dyn std::error::Error>> {
+fn large_msg_loop(port: u16) -> Result<(), Box<dyn core::error::Error>> {
     let mut client = llmp::LlmpClient::create_attach_to_tcp(StdShMemProvider::new()?, port)?;
 
     #[cfg(not(target_vendor = "apple"))]
@@ -165,7 +167,7 @@ fn main() {
 }
 
 #[cfg(not(target_os = "haiku"))]
-fn main() -> Result<(), Box<dyn std::error::Error>> {
+fn main() -> Result<(), Box<dyn core::error::Error>> {
     /* The main node has a broker, and a few worker threads */
 
     use libafl_bolts::llmp::Broker;

libafl_bolts/src/build_id.rs

@@ -1,14 +1,11 @@
 //! Based on <https://github.com/alecmocatta/build_id>
 //! (C) Alec Mocatta <alec@mocatta.net> under license MIT or Apache 2
 
-use std::{
+use core::{
     any::TypeId,
-    env,
-    fs::File,
     hash::{Hash, Hasher},
-    io,
-    sync::OnceLock,
 };
+use std::{env, fs::File, io, sync::OnceLock};
 
 use uuid::Uuid;
 

libafl_bolts/src/cli.rs

@@ -64,9 +64,10 @@
 #[cfg(feature = "frida_cli")]
 use alloc::{boxed::Box, string::ToString};
 use alloc::{string::String, vec::Vec};
+use core::{net::SocketAddr, time::Duration};
 #[cfg(feature = "frida_cli")]
 use std::error;
-use std::{net::SocketAddr, path::PathBuf, time::Duration};
+use std::path::PathBuf;
 
 #[cfg(feature = "frida_cli")]
 use clap::ValueEnum;

libafl_bolts/src/fs.rs

@@ -1,8 +1,8 @@
 //! `LibAFL` functionality for filesystem interaction
 
-use alloc::rc::Rc;
 #[cfg(feature = "std")]
 use alloc::{borrow::ToOwned, vec::Vec};
+use alloc::{rc::Rc, string::String};
 use core::cell::RefCell;
 #[cfg(feature = "std")]
 use core::time::Duration;
@@ -14,7 +14,6 @@ use std::{
     fs::{self, File, OpenOptions, remove_file},
     io::{Seek, Write},
     path::{Path, PathBuf},
-    string::String,
 };
 
 use crate::Error;

libafl_bolts/src/lib.rs

@@ -145,13 +145,14 @@ use alloc::{borrow::Cow, vec::Vec};
 use core::hash::BuildHasher;
 #[cfg(any(feature = "xxh3", feature = "alloc"))]
 use core::hash::{Hash, Hasher};
+#[cfg(all(unix, feature = "std"))]
+use core::mem;
 #[cfg(feature = "std")]
 use std::time::{SystemTime, UNIX_EPOCH};
 #[cfg(all(unix, feature = "std"))]
 use std::{
     fs::File,
     io::{Write, stderr, stdout},
-    mem,
     os::fd::{AsRawFd, FromRawFd, RawFd},
     panic,
 };

libafl_bolts/src/llmp.rs

@@ -57,9 +57,13 @@ Check out the `llmp_test` example in ./examples, or build it with `cargo run --e
 
 */
 
+#[cfg(feature = "std")]
+use alloc::boxed::Box;
 #[cfg(feature = "std")]
 use alloc::string::ToString;
 use alloc::{string::String, vec::Vec};
+#[cfg(feature = "std")]
+use core::net::SocketAddr;
 #[cfg(not(target_pointer_width = "64"))]
 use core::sync::atomic::AtomicU32;
 #[cfg(target_pointer_width = "64")]
@@ -77,10 +81,9 @@ use core::{
 };
 #[cfg(feature = "std")]
 use std::{
-    boxed::Box,
     env,
     io::{ErrorKind, Read, Write},
-    net::{SocketAddr, TcpListener, TcpStream, ToSocketAddrs},
+    net::{TcpListener, TcpStream, ToSocketAddrs},
     sync::mpsc::channel,
     thread,
 };
@@ -3864,7 +3867,8 @@ impl<SHM, SP> LlmpClient<SHM, SP> {
 #[cfg(all(unix, feature = "std", not(target_os = "haiku")))]
 mod tests {
 
-    use std::{thread::sleep, time::Duration};
+    use core::time::Duration;
+    use std::thread::sleep;
 
     use serial_test::serial;
 

libafl_bolts/src/minibsod.rs

@@ -1,13 +1,13 @@
 //! Implements a mini-bsod generator.
 //! It dumps all important registers and prints a stacktrace.
 
+#[cfg(unix)]
+use alloc::vec::Vec;
 #[cfg(any(target_vendor = "apple", target_os = "openbsd"))]
 use core::mem::size_of;
 use std::io::{BufWriter, Write};
 #[cfg(any(target_os = "solaris", target_os = "illumos"))]
 use std::process::Command;
-#[cfg(unix)]
-use std::vec::Vec;
 
 #[cfg(unix)]
 use libc::siginfo_t;
@@ -999,7 +999,7 @@ fn write_minibsod<W: Write>(writer: &mut BufWriter<W>) -> Result<(), std::io::Er
 
 #[cfg(target_vendor = "apple")]
 fn write_minibsod<W: Write>(writer: &mut BufWriter<W>) -> Result<(), std::io::Error> {
-    let mut ptask = std::mem::MaybeUninit::<mach_port_t>::uninit();
+    let mut ptask = core::mem::MaybeUninit::<mach_port_t>::uninit();
     // We start by the lowest virtual address from the userland' standpoint
     let mut addr: mach_vm_address_t = 0;
     let mut _cnt: mach_msg_type_number_t = 0;
@@ -1014,7 +1014,7 @@ fn write_minibsod<W: Write>(writer: &mut BufWriter<W>) -> Result<(), std::io::Er
     let task = unsafe { ptask.assume_init() };
 
     loop {
-        let mut pvminfo = std::mem::MaybeUninit::<vm_region_submap_info_64>::uninit();
+        let mut pvminfo = core::mem::MaybeUninit::<vm_region_submap_info_64>::uninit();
         _cnt = mach_msg_type_number_t::try_from(
             size_of::<vm_region_submap_info_64>() / size_of::<natural_t>(),
         )

libafl_bolts/src/os/mod.rs

@@ -15,15 +15,17 @@ pub use unix_signals::CTRL_C_EXIT;
 pub mod pipes;
 
 #[cfg(all(unix, feature = "std"))]
-use alloc::borrow::Cow;
+use alloc::{borrow::Cow, ffi::CString};
 #[cfg(all(unix, feature = "std"))]
 use core::ffi::CStr;
 #[cfg(feature = "std")]
 use std::{env, process::Command};
 #[cfg(all(unix, feature = "std"))]
-use std::{ffi::CString, os::fd::RawFd};
-#[cfg(all(unix, feature = "std"))]
-use std::{fs::File, os::fd::AsRawFd, sync::OnceLock};
+use std::{
+    fs::File,
+    os::fd::{AsRawFd, RawFd},
+    sync::OnceLock,
+};
 
 // Allow a few extra features we need for the whole module
 #[cfg(all(windows, feature = "std"))]

libafl_bolts/src/os/pipes.rs

@@ -1,14 +1,15 @@
 //! Unix `pipe` wrapper for `LibAFL`
 #[cfg(feature = "std")]
+use alloc::rc::Rc;
+#[cfg(feature = "std")]
+use core::{borrow::Borrow, cell::RefCell};
+#[cfg(feature = "std")]
 use std::{
-    borrow::Borrow,
-    cell::RefCell,
     io::{self, ErrorKind, Read, Write},
     os::{
         fd::{AsFd, AsRawFd, OwnedFd},
         unix::io::RawFd,
     },
-    rc::Rc,
 };
 
 #[cfg(feature = "std")]

libafl_bolts/src/os/unix_shmem_server.rs

@@ -5,26 +5,29 @@ Hence, the `unix_shmem_server` keeps track of existing maps, creates new maps fo
 and forwards them over unix domain sockets.
 */
 
+use alloc::{
+    rc::{Rc, Weak},
+    sync::Arc,
+};
 #[cfg(feature = "std")]
 use alloc::{
     string::{String, ToString},
     vec::Vec,
 };
 use core::{
+    cell::RefCell,
     fmt::Debug,
+    marker::PhantomData,
     mem::ManuallyDrop,
     ops::{Deref, DerefMut},
 };
 #[cfg(target_vendor = "apple")]
 use std::fs;
 use std::{
-    cell::RefCell,
     env,
     io::{Read, Write},
-    marker::PhantomData,
     os::fd::{AsFd, BorrowedFd},
-    rc::{Rc, Weak},
-    sync::{Arc, Condvar, Mutex},
+    sync::{Condvar, Mutex},
     thread::JoinHandle,
 };
 #[cfg(all(feature = "std", unix))]

libafl_bolts/src/os/unix_signals.rs

@@ -1,4 +1,6 @@
 //! Signal handling for unix
+#[cfg(feature = "std")]
+use alloc::ffi::CString;
 #[cfg(feature = "alloc")]
 use alloc::vec::Vec;
 #[cfg(all(target_vendor = "apple", target_arch = "aarch64"))]
@@ -13,8 +15,6 @@ use core::{
     fmt::{self, Display, Formatter},
     mem,
 };
-#[cfg(feature = "std")]
-use std::ffi::CString;
 
 /// armv7 `libc` does not feature a `uncontext_t` implementation
 #[cfg(target_arch = "arm")]

libafl_bolts/src/ownedref.rs

@@ -1,18 +1,14 @@
 //! Wrappers that abstracts references (or pointers) and owned data accesses.
 // The serialization is towards owned, allowing to serialize pointers without troubles.
 
-use alloc::{
-    boxed::Box,
-    slice::{Iter, IterMut},
-    vec::Vec,
-};
+use alloc::{boxed::Box, vec::Vec};
 use core::{
     clone::Clone,
     fmt::Debug,
     ops::{Deref, DerefMut, RangeBounds},
     ptr::NonNull,
     slice,
-    slice::SliceIndex,
+    slice::{Iter, IterMut, SliceIndex},
 };
 
 use serde::{Deserialize, Deserializer, Serialize, Serializer};

libafl_bolts/src/rands/mod.rs

@@ -36,10 +36,8 @@ fn random_seed_deterministic() -> u64 {
 
 #[cfg(feature = "std")]
 fn random_seed_from_random_state() -> u64 {
-    use std::{
-        collections::hash_map::RandomState,
-        hash::{BuildHasher, Hasher},
-    };
+    use core::hash::{BuildHasher, Hasher};
+    use std::collections::hash_map::RandomState;
     RandomState::new().build_hasher().finish()
 }
 

libafl_bolts/src/shmem.rs

@@ -194,7 +194,7 @@ impl ShMemId {
     #[cfg(feature = "alloc")]
     #[must_use]
     pub fn as_str(&self) -> &str {
-        alloc::str::from_utf8(&self.id[..self.null_pos()]).unwrap()
+        core::str::from_utf8(&self.id[..self.null_pos()]).unwrap()
     }
 }
 
@@ -1165,12 +1165,11 @@ pub mod unix_shmem {
     /// Module containing `ashmem` shared memory support, commonly used on Android.
     #[cfg(all(any(target_os = "linux", target_os = "android"), feature = "std"))]
     pub mod ashmem {
-        use alloc::string::ToString;
+        use alloc::{ffi::CString, string::ToString};
         use core::{
             ops::{Deref, DerefMut},
             ptr, slice,
         };
-        use std::ffi::CString;
 
         use libc::{
             MAP_SHARED, O_RDWR, PROT_READ, PROT_WRITE, c_uint, c_ulong, c_void, close, ioctl, mmap,
@@ -1386,12 +1385,12 @@ pub mod unix_shmem {
         any(target_os = "linux", target_os = "android", target_os = "freebsd")
     ))]
     pub mod memfd {
-        use alloc::string::ToString;
+        use alloc::{ffi::CString, string::ToString};
         use core::{
             ops::{Deref, DerefMut},
             ptr, slice,
         };
-        use std::{ffi::CString, os::fd::IntoRawFd};
+        use std::os::fd::IntoRawFd;
 
         use libc::{
             MAP_SHARED, PROT_READ, PROT_WRITE, c_void, close, fstat, ftruncate, mmap, munmap,
@@ -1454,7 +1453,7 @@ pub mod unix_shmem {
             fn shmem_from_id_and_size(id: ShMemId, map_size: usize) -> Result<Self, Error> {
                 let fd = i32::from(id);
                 unsafe {
-                    let mut stat = std::mem::zeroed();
+                    let mut stat = core::mem::zeroed();
                     if fstat(fd, &mut stat) == -1 {
                         return Err(Error::unknown(
                             "Failed to map the memfd mapping".to_string(),
@@ -1880,11 +1879,11 @@ mod tests {
     #[cfg(unix)]
     #[cfg_attr(miri, ignore)]
     fn test_persist_shmem() -> Result<(), Error> {
+        use alloc::string::ToString;
         use core::ffi::CStr;
         use std::{
             env,
             process::{Command, Stdio},
-            string::ToString,
         };
 
         use crate::shmem::{MmapShMemProvider, ShMem as _, ShMemId};

libafl_bolts/src/staterestore.rs

@@ -5,14 +5,15 @@ use core::{
     hash::{BuildHasher, Hasher},
     marker::PhantomData,
     mem::size_of,
-    ptr, slice,
+    ptr,
+    ptr::read_volatile,
+    slice,
 };
 use std::{
     env::temp_dir,
     fs::{self, File},
     io::{Read, Write},
     path::PathBuf,
-    ptr::read_volatile,
 };
 
 use ahash::RandomState;

libafl_bolts/src/tuples.rs

@@ -1014,11 +1014,11 @@ mod test {
     fn test_macros() {
         let mut t = tuple_list!(1, "a");
 
-        tuple_for_each!(f1, std::fmt::Display, t, |x| {
+        tuple_for_each!(f1, core::fmt::Display, t, |x| {
             log::info!("{x}");
         });
 
-        tuple_for_each_mut!(f2, std::fmt::Display, t, |x| {
+        tuple_for_each_mut!(f2, core::fmt::Display, t, |x| {
             log::info!("{x}");
         });
     }

libafl_cc/build.rs

@@ -1,3 +1,4 @@
+use core::str;
 #[cfg(any(
     target_vendor = "apple",
     feature = "ddg-instr",
@@ -11,7 +12,7 @@
     feature = "profiling",
 ))]
 use std::path::PathBuf;
-use std::{env, fs::File, io::Write, path::Path, process::Command, str};
+use std::{env, fs::File, io::Write, path::Path, process::Command};
 
 #[cfg(target_vendor = "apple")]
 use glob::glob;

libafl_cc/src/ar.rs

@@ -1,7 +1,8 @@
 //! Ar Wrapper from `LibAFL`
 // pass to e.g. cmake with -DCMAKE_AR=/path/to/fuzzer/target/release/libafl_ar
 
-use std::{env, path::PathBuf, str::FromStr};
+use core::str::FromStr;
+use std::{env, path::PathBuf};
 
 use crate::{Error, LIB_EXT, LIB_PREFIX, ToolWrapper};
 

libafl_cc/src/cfg.rs

@@ -1,9 +1,11 @@
 //! LLVM style control flow graph with information of AFL-style index of the each
 //! edges, use together with ``AFLCoverage`` pass having --dump-afl-cfg flag enabled.
-use std::{
-    collections::{BinaryHeap, HashMap, HashSet},
-    marker::PhantomData,
-};
+
+extern crate alloc;
+
+use alloc::collections::BinaryHeap;
+use core::marker::PhantomData;
+use std::collections::{HashMap, HashSet};
 
 use serde::{Deserialize, Serialize};
 

libafl_cc/src/clang.rs

@@ -1,10 +1,7 @@
 //! LLVM compiler Wrapper from `LibAFL`
 
-use std::{
-    env,
-    path::{Path, PathBuf},
-    str::FromStr,
-};
+use core::{env, str::FromStr};
+use std::path::{Path, PathBuf};
 
 use crate::{CompilerWrapper, Error, LIB_EXT, LIB_PREFIX, ToolWrapper};
 

libafl_cc/src/lib.rs

@@ -145,7 +145,7 @@ impl Configuration {
     }
 }
 
-impl std::str::FromStr for Configuration {
+impl str::FromStr for Configuration {
     type Err = ();
     fn from_str(input: &str) -> Result<Configuration, Self::Err> {
         Ok(match input {
@@ -159,8 +159,8 @@ impl std::str::FromStr for Configuration {
     }
 }
 
-impl std::fmt::Display for Configuration {
-    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+impl core::fmt::Display for Configuration {
+    fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
         match self {
             Configuration::Default => write!(f, ""),
             Configuration::AddressSanitizer => write!(f, "asan"),

libafl_cc/src/libtool.rs

@@ -1,7 +1,8 @@
 //! Libtool Wrapper from `LibAFL`
 // call make passing LIBTOOL=/path/to/target/release/libafl_libtool
 
-use std::{env, path::PathBuf, str::FromStr};
+use core::str::FromStr;
+use std::{env, path::PathBuf};
 
 use crate::{Error, LIB_EXT, LIB_PREFIX, ToolWrapper};
 

libafl_concolic/symcc_runtime/build.rs

@@ -1,5 +1,5 @@
+use core::cell::RefCell;
 use std::{
-    cell::RefCell,
     env,
     fs::File,
     io::Write,

libafl_concolic/symcc_runtime/src/filter/coverage.rs

@@ -1,8 +1,8 @@
-use std::{
-    collections::hash_map::DefaultHasher,
+use core::{
     hash::{BuildHasher, BuildHasherDefault, Hash, Hasher},
     marker::PhantomData,
 };
+use std::collections::hash_map::DefaultHasher;
 
 use libafl_bolts::shmem::ShMem;
 

libafl_concolic/symcc_runtime/src/lib.rs

@@ -189,12 +189,12 @@ macro_rules! impl_nop_runtime_fn {
     // special case for expression_unreachable, because it has a different signature in our runtime trait than in the c interface.
     (pub fn expression_unreachable(expressions: *mut RSymExpr, num_elements: usize), $c_name:ident;) => {
         // #[expect(clippy::default_trait_access)]
-        fn expression_unreachable(&mut self, _exprs: &[RSymExpr]) {std::default::Default::default()}
+        fn expression_unreachable(&mut self, _exprs: &[RSymExpr]) {core::default::Default::default()}
     };
 
     (pub fn $name:ident($( $arg:ident : $type:ty ),*$(,)?)$( -> $ret:ty)?, $c_name:ident;) => {
         // #[expect(clippy::default_trait_access)]
-        fn $name(&mut self, $( _ : $type),*)$( -> Option<$ret>)? {std::default::Default::default()}
+        fn $name(&mut self, $( _ : $type),*)$( -> Option<$ret>)? {core::default::Default::default()}
     };
 }
 

libafl_frida/src/allocator.rs

@@ -7,7 +7,17 @@
         target_os = "android"
     )
 ))]
-use std::{collections::BTreeMap, ffi::c_void};
+use alloc::collections::BTreeMap;
+#[cfg(any(
+    windows,
+    target_os = "linux",
+    target_vendor = "apple",
+    all(
+        any(target_arch = "aarch64", target_arch = "x86_64"),
+        target_os = "android"
+    )
+))]
+use core::ffi::c_void;
 
 use backtrace::Backtrace;
 use frida_gum::{PageProtection, RangeDetails};
@@ -183,12 +193,12 @@ impl Allocator {
                 panic!("ASAN: Allocation is too large: 0x{size:x}");
             }
 
-            return std::ptr::null_mut();
+            return core::ptr::null_mut();
         }
         let rounded_up_size = self.round_up_to_page(size) + 2 * self.page_size;
 
         if self.total_allocation_size + rounded_up_size > self.max_total_allocation {
-            return std::ptr::null_mut();
+            return core::ptr::null_mut();
         }
         self.total_allocation_size += rounded_up_size;
 
@@ -212,7 +222,7 @@ impl Allocator {
                 Ok(mapping) => mapping,
                 Err(err) => {
                     log::error!("An error occurred while mapping memory: {err:?}");
-                    return std::ptr::null_mut();
+                    return core::ptr::null_mut();
                 }
             };
             self.current_mapping_addr += ((rounded_up_size
@@ -241,7 +251,7 @@ impl Allocator {
             metadata
         };
 
-        self.largest_allocation = std::cmp::max(self.largest_allocation, metadata.actual_size);
+        self.largest_allocation = core::cmp::max(self.largest_allocation, metadata.actual_size);
         // unpoison the shadow memory for the allocation itself
         unsafe {
             Self::unpoison(
@@ -308,7 +318,7 @@ impl Allocator {
             let new_offset = if hint_base == metadata.address {
                 (ptr - address).abs()
             } else {
-                std::cmp::min(offset_to_closest, (ptr - address).abs())
+                core::cmp::min(offset_to_closest, (ptr - address).abs())
             };
             if new_offset < offset_to_closest {
                 offset_to_closest = new_offset;
@@ -370,7 +380,7 @@ impl Allocator {
     /// start needs to be a valid address, We need to be able to fill `size / 8` bytes.
     unsafe fn unpoison(start: usize, size: usize) {
         unsafe {
-            std::slice::from_raw_parts_mut(start as *mut u8, size / 8).fill(0xff);
+            core::slice::from_raw_parts_mut(start as *mut u8, size / 8).fill(0xff);
 
             let remainder = size % 8;
             if remainder > 0 {
@@ -387,7 +397,7 @@ impl Allocator {
     /// start needs to be a valid address, We need to be able to fill `size / 8` bytes.
     pub unsafe fn poison(start: usize, size: usize) {
         unsafe {
-            std::slice::from_raw_parts_mut(start as *mut u8, size / 8).fill(0x0);
+            core::slice::from_raw_parts_mut(start as *mut u8, size / 8).fill(0x0);
 
             let remainder = size % 8;
             if remainder > 0 {
@@ -485,7 +495,7 @@ impl Allocator {
 
         let shadow_addr = map_to_shadow!(self, (address as usize));
         let shadow_size = size >> 3;
-        let buf = unsafe { std::slice::from_raw_parts_mut(shadow_addr as *mut u8, shadow_size) };
+        let buf = unsafe { core::slice::from_raw_parts_mut(shadow_addr as *mut u8, shadow_size) };
         let (prefix, aligned, suffix) = unsafe { buf.align_to::<u128>() };
         if !prefix.iter().all(|&x| x == 0xff)
             || !suffix.iter().all(|&x| x == 0xff)
@@ -605,7 +615,7 @@ impl Allocator {
                 unsafe {
                     println!(
                         "{:x?}",
-                        std::slice::from_raw_parts(metadata.address as *const u8, metadata.size)
+                        core::slice::from_raw_parts(metadata.address as *const u8, metadata.size)
                     );
                 };
                 panic!("ASAN: Crashing target!");

libafl_frida/src/asan/asan_rt.rs

@@ -6,14 +6,14 @@ even if the target would not have crashed under normal conditions.
 this helps finding mem errors early.
 */
 
-use core::fmt::{self, Debug, Formatter};
-use std::{
+use alloc::rc::Rc;
+use core::{
     cell::Cell,
     ffi::{c_char, c_void},
+    fmt::{self, Debug, Formatter},
     ptr::write_volatile,
-    rc::Rc,
-    sync::{Mutex, MutexGuard},
 };
+use std::sync::{Mutex, MutexGuard};
 
 use backtrace::Backtrace;
 use dynasmrt::{DynasmApi, DynasmLabelApi, dynasm};
@@ -47,7 +47,7 @@ use crate::utils::{AccessType, operand_details};
 #[cfg(target_arch = "aarch64")]
 use crate::utils::{instruction_width, writer_register};
 use crate::{
-    alloc::Allocator,
+    allocator::Allocator,
     asan::errors::{ASAN_ERRORS, AsanError, AsanErrors, AsanReadWriteError},
     helper::{FridaRuntime, SkipRange},
     utils::disas_count,
@@ -95,7 +95,7 @@ impl Default for AsanInHookGuard {
 /// This is a simple way to prevent reentrancy in the hooks when we don't have TLS.
 /// This is not a perfect solution, as it is global so it orders all threads without TLS.
 /// However, this is a rare situation and should not affect performance significantly.
-use std::sync::atomic::{AtomicU64, Ordering};
+use core::sync::atomic::{AtomicU64, Ordering};
 use std::thread;
 #[derive(Debug)]
 struct Lock {
@@ -612,7 +612,7 @@ impl AsanRuntime {
 
                     static [<$name:snake:upper _PTR>]: std::sync::OnceLock<extern "C" fn($($param: $param_type),*) -> $return_type> = std::sync::OnceLock::new();
 
-                    let _ = [<$name:snake:upper _PTR>].set(unsafe {std::mem::transmute::<*const c_void, extern "C" fn($($param: $param_type),*) -> $return_type>(target_function.0)}).unwrap();
+                    let _ = [<$name:snake:upper _PTR>].set(unsafe {core::mem::transmute::<*const c_void, extern "C" fn($($param: $param_type),*) -> $return_type>(target_function.0)}).unwrap();
 
                     #[allow(non_snake_case)]
                     unsafe extern "C" fn [<replacement_ $name>]($($param: $param_type),*) -> $return_type {
@@ -662,7 +662,7 @@ impl AsanRuntime {
 
                     static [<$lib_ident:snake:upper _ $name:snake:upper _PTR>]: std::sync::OnceLock<extern "C" fn($($param: $param_type),*) -> $return_type> = std::sync::OnceLock::new();
 
-                    let _ = [<$lib_ident:snake:upper _ $name:snake:upper _PTR>].set(unsafe {std::mem::transmute::<*const c_void, extern "C" fn($($param: $param_type),*) -> $return_type>(target_function.0)}).unwrap();
+                    let _ = [<$lib_ident:snake:upper _ $name:snake:upper _PTR>].set(unsafe {core::mem::transmute::<*const c_void, extern "C" fn($($param: $param_type),*) -> $return_type>(target_function.0)}).unwrap();
 
                     #[allow(non_snake_case)]
                     unsafe extern "C" fn [<replacement_ $name>]($($param: $param_type),*) -> $return_type {
@@ -707,7 +707,7 @@ impl AsanRuntime {
                     log::warn!("Hooking {} = {:?}", stringify!($name), target_function.0);
                     static [<$name:snake:upper _PTR>]: std::sync::OnceLock<extern "C" fn($($param: $param_type),*) -> $return_type> = std::sync::OnceLock::new();
 
-                    let _ = [<$name:snake:upper _PTR>].set(unsafe {std::mem::transmute::<*const c_void, extern "C" fn($($param: $param_type),*) -> $return_type>(target_function.0)}).unwrap_or_else(|e| println!("{:?}", e));
+                    let _ = [<$name:snake:upper _PTR>].set(unsafe {core::mem::transmute::<*const c_void, extern "C" fn($($param: $param_type),*) -> $return_type>(target_function.0)}).unwrap_or_else(|e| println!("{:?}", e));
 
                     #[allow(non_snake_case)] // depends on the values the macro is invoked with
                     #[allow(clippy::redundant_else)]
@@ -1522,7 +1522,7 @@ impl AsanRuntime {
 
         let instructions: Vec<Instruction> = disas_count(
             &decoder,
-            unsafe { std::slice::from_raw_parts(actual_pc as *mut u8, 24) },
+            unsafe { core::slice::from_raw_parts(actual_pc as *mut u8, 24) },
             3,
         );
 

libafl_frida/src/asan/errors.rs

@@ -1,9 +1,8 @@
 //! Errors that can be caught by the `libafl_frida` address sanitizer.
+use alloc::borrow::Cow;
+use core::{fmt::Debug, marker::PhantomData};
 use std::{
-    borrow::Cow,
-    fmt::Debug,
     io::Write,
-    marker::PhantomData,
     sync::{Mutex, MutexGuard},
 };
 
@@ -38,7 +37,7 @@ use yaxpeax_x86::amd64::InstDecoder;
 #[cfg(target_arch = "x86_64")]
 use crate::asan::asan_rt::ASAN_SAVE_REGISTER_NAMES;
 use crate::{
-    alloc::AllocationMetadata, asan::asan_rt::ASAN_SAVE_REGISTER_COUNT, utils::disas_count,
+    allocator::AllocationMetadata, asan::asan_rt::ASAN_SAVE_REGISTER_COUNT, utils::disas_count,
 };
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -263,7 +262,7 @@ impl AsanErrors {
                 #[cfg(target_arch = "x86_64")]
                 let insts = disas_count(
                     &decoder,
-                    unsafe { std::slice::from_raw_parts(start_pc as *mut u8, 15 * 11) },
+                    unsafe { core::slice::from_raw_parts(start_pc as *mut u8, 15 * 11) },
                     11,
                 );
 
@@ -534,7 +533,7 @@ impl AsanErrors {
                 #[cfg(target_arch = "x86_64")]
                 let insts = disas_count(
                     &decoder,
-                    unsafe { std::slice::from_raw_parts(*start_pc as *mut u8, 15 * 11) },
+                    unsafe { core::slice::from_raw_parts(*start_pc as *mut u8, 15 * 11) },
                     11,
                 );
 

libafl_frida/src/asan/hook_funcs.rs

@@ -1,11 +1,11 @@
 //! The allocator hooks for address sanitizer.
-use std::ffi::c_void;
+use core::ffi::c_void;
 
 use backtrace::Backtrace;
 use libc::{c_char, wchar_t};
 
 use crate::{
-    alloc::Allocator,
+    allocator::Allocator,
     asan::{
         asan_rt::AsanRuntime,
         errors::{AsanError, AsanErrors},
@@ -21,7 +21,7 @@ unsafe extern "system" {
     fn memset(s: *mut c_void, c: i32, n: usize) -> *mut c_void;
 }
 
-use std::ptr;
+use core::ptr;
 
 #[cfg(windows)]
 use winapi::um::memoryapi::VirtualQuery;
@@ -2371,7 +2371,7 @@ impl AsanRuntime {
         {
             panic!("ASAN: Crashing target!");
         }
-        let mn = std::cmp::min(n, unsafe { strlen(src) } + 1);
+        let mn = core::cmp::min(n, unsafe { strlen(src) } + 1);
         if !self.allocator_mut().check_shadow(src as *const c_void, mn)
             && AsanErrors::get_mut_blocking().report_error(AsanError::BadFuncArgRead((
                 "strncpy".to_string(),

libafl_frida/src/cmplog_rt.rs

@@ -6,9 +6,9 @@
 //! related to the input.
 //! Read the [`RedQueen`](https://www.ndss-symposium.org/ndss-paper/redqueen-fuzzing-with-input-to-state-correspondence/) paper for the general concepts.
 
+use alloc::rc::Rc;
 #[cfg(target_arch = "aarch64")]
 use core::ffi::c_void;
-use std::rc::Rc;
 
 use dynasmrt::dynasm;
 #[cfg(target_arch = "aarch64")]

libafl_frida/src/coverage_rt.rs

@@ -1,6 +1,7 @@
 //! Functionality regarding binary-only coverage collection.
 
-use std::{cell::RefCell, marker::PhantomPinned, pin::Pin, rc::Rc};
+use alloc::rc::Rc;
+use core::{cell::RefCell, marker::PhantomPinned, pin::Pin};
 
 #[cfg(target_arch = "aarch64")]
 use dynasmrt::DynasmLabelApi;

libafl_frida/src/drcov_rt.rs

@@ -1,9 +1,7 @@
 //! Generates `DrCov` traces
-use std::{
-    hash::{BuildHasher, Hasher},
-    path::{Path, PathBuf},
-    rc::Rc,
-};
+use alloc::rc::Rc;
+use core::hash::{BuildHasher, Hasher};
+use std::path::{Path, PathBuf};
 
 use ahash::RandomState;
 use frida_gum::ModuleMap;

libafl_frida/src/executor.rs

@@ -1,7 +1,12 @@
-use core::fmt::{self, Debug, Formatter};
+use alloc::rc::Rc;
+use core::{
+    cell::RefCell,
+    ffi::c_void,
+    fmt::{self, Debug, Formatter},
+    marker::PhantomData,
+};
 #[cfg(all(windows, not(test)))]
 use std::process::abort;
-use std::{cell::RefCell, ffi::c_void, marker::PhantomData, rc::Rc};
 
 use frida_gum::{
     Gum, MemoryRange, NativePointer,

libafl_frida/src/frida_helper_shutdown_observer.rs

@@ -1,4 +1,5 @@
-use std::{borrow::Cow, cell::RefCell, fmt, rc::Rc};
+use alloc::{borrow::Cow, rc::Rc};
+use core::{cell::RefCell, fmt};
 
 use libafl::{executors::ExitKind, inputs::HasTargetBytes, observers::Observer};
 use libafl_bolts::{Error, Named};
@@ -65,7 +66,7 @@ impl<'de, RT> Deserialize<'de> for FridaHelperObserver<'_, RT> {
     {
         struct FridaHelperObserverVisitor<'a, RT> {
             // marker: std::marker::PhantomData<&'b mut FridaInstrumentationHelper<'a, RT>>,
-            marker: std::marker::PhantomData<&'a RT>,
+            marker: core::marker::PhantomData<&'a RT>,
         }
 
         impl<'de, 'a, RT> Visitor<'de> for FridaHelperObserverVisitor<'a, RT> {
@@ -90,7 +91,7 @@ impl<'de, RT> Deserialize<'de> for FridaHelperObserver<'_, RT> {
             "FridaHelperObserver",
             &[], // No fields to deserialize
             FridaHelperObserverVisitor {
-                marker: std::marker::PhantomData,
+                marker: core::marker::PhantomData,
             },
         )
     }

libafl_frida/src/helper.rs

@@ -1,11 +1,13 @@
-use core::fmt::{self, Debug, Formatter};
-use std::{
+use alloc::rc::Rc;
+use core::{
     any::TypeId,
     cell::{Ref, RefCell, RefMut},
     ffi::CStr,
+    fmt::{self, Debug, Formatter},
+};
+use std::{
     fs::{self, read_to_string},
     path::{Path, PathBuf},
-    rc::Rc,
 };
 
 use frida_gum::{
@@ -35,7 +37,7 @@ use crate::cmplog_rt::CmpLogRuntime;
 use crate::{asan::asan_rt::AsanRuntime, coverage_rt::CoverageRuntime, drcov_rt::DrCovRuntime};
 
 /// The Runtime trait
-pub trait FridaRuntime: 'static + Debug + std::any::Any {
+pub trait FridaRuntime: 'static + Debug + core::any::Any {
     /// Initialization
     fn init(
         &mut self,
@@ -65,7 +67,7 @@ where
     FR1: Debug,
     FR2: Debug,
 {
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         Debug::fmt(&self.if_runtimes, f)?;
         Debug::fmt(&self.else_runtimes, f)?;
         Ok(())
@@ -202,7 +204,7 @@ impl MatchFirstType for FridaRuntimeVec {
     fn match_first_type<T: 'static>(&self) -> Option<&T> {
         for member in &self.0 {
             if TypeId::of::<T>() == member.type_id() {
-                let raw = std::ptr::from_ref::<dyn FridaRuntime>(&**member) as *const T;
+                let raw = core::ptr::from_ref::<dyn FridaRuntime>(&**member) as *const T;
                 return unsafe { raw.as_ref() };
             }
         }
@@ -213,7 +215,7 @@ impl MatchFirstType for FridaRuntimeVec {
     fn match_first_type_mut<T: 'static>(&mut self) -> Option<&mut T> {
         for member in &mut self.0 {
             if TypeId::of::<T>() == member.type_id() {
-                let raw = std::ptr::from_mut::<dyn FridaRuntime>(&mut **member) as *mut T;
+                let raw = core::ptr::from_mut::<dyn FridaRuntime>(&mut **member) as *mut T;
                 return unsafe { raw.as_mut() };
             }
         }
@@ -259,7 +261,7 @@ impl FridaRuntimeTuple for FridaRuntimeVec {
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum SkipRange {
     /// An absolute range
-    Absolute(std::ops::Range<usize>),
+    Absolute(core::ops::Range<usize>),
 
     /// A range relative to the module with the given name
     ModuleRelative {
@@ -267,7 +269,7 @@ pub enum SkipRange {
         name: String,
 
         /// The address range
-        range: std::ops::Range<usize>,
+        range: core::ops::Range<usize>,
     },
 }
 
@@ -810,14 +812,14 @@ where
             for _ in 0..512 {
                 mmap_anonymous(
                     None,
-                    std::num::NonZeroUsize::new_unchecked(128 * 1024),
+                    core::num::NonZeroUsize::new_unchecked(128 * 1024),
                     ProtFlags::PROT_NONE,
                     MapFlags::MAP_PRIVATE | MapFlags::MAP_NORESERVE,
                 )
                 .expect("Failed to map dummy regions for frida workaround");
                 mmap_anonymous(
                     None,
-                    std::num::NonZeroUsize::new_unchecked(4 * 1024 * 1024),
+                    core::num::NonZeroUsize::new_unchecked(4 * 1024 * 1024),
                     ProtFlags::PROT_NONE,
                     MapFlags::MAP_PRIVATE | MapFlags::MAP_NORESERVE,
                 )

libafl_frida/src/lib.rs

@@ -43,8 +43,10 @@ Additional documentation is available in [the `LibAFL` book](https://aflplus.plu
     )
 )]
 
+extern crate alloc;
+
 /// The frida-asan allocator
-pub mod alloc;
+pub mod allocator;
 
 pub mod asan;
 
@@ -325,8 +327,9 @@ impl Default for FridaOptions {
 
 #[cfg(test)]
 mod tests {
-    use core::num::NonZero;
-    use std::{cell::RefCell, rc::Rc, sync::OnceLock};
+    use alloc::rc::Rc;
+    use core::{cell::RefCell, num::NonZero};
+    use std::sync::OnceLock;
 
     use clap::Parser;
     use frida_gum::Gum;
@@ -365,6 +368,7 @@ mod tests {
 
     #[expect(clippy::too_many_lines)]
     unsafe fn test_asan(options: &FuzzerOptions) {
+        unsafe {
             // The names of the functions to run
             let tests = vec![
                 ("LLVMFuzzerTestOneInput", None),
@@ -540,6 +544,7 @@ mod tests {
                 .borrow_mut()
                 .deinit(GUM.get().expect("Gum uninitialized"));
         }
+    }
 
     #[test]
     fn run_test_asan() {

libafl_intelpt/src/lib.rs

@@ -3,7 +3,7 @@
 //! This crate interacts with the linux kernel (specifically with perf) and therefore it only works
 //! on linux hosts
 
-// Just in case this crate will have real no_std support in the future
+// Just in case this crate will have real `no_std` support in the future
 #![no_std]
 #![cfg(target_arch = "x86_64")]
 #![cfg(feature = "std")]
@@ -12,9 +12,11 @@
 #[macro_use]
 extern crate std;
 
+extern crate alloc;
+
+use alloc::{borrow::ToOwned, string::String, vec::Vec};
 #[cfg(target_os = "linux")]
 use std::fs;
-use std::{borrow::ToOwned, string::String, vec::Vec};
 
 use raw_cpuid::CpuId;
 

libafl_intelpt/src/linux.rs

@@ -1,19 +1,22 @@
-use std::{
+extern crate alloc;
+
+use alloc::{
     borrow::ToOwned,
     boxed::Box,
-    ffi::{CStr, CString},
-    fmt::Debug,
-    format, fs,
-    ops::RangeInclusive,
+    ffi::CString,
+    format,
+    string::{String, ToString},
+    vec::Vec,
+};
+use core::{ffi::CStr, fmt::Debug, ops::RangeInclusive, ptr};
+use std::{
+    fs,
     os::{
         fd::{AsRawFd, FromRawFd, OwnedFd},
         raw::c_void,
     },
     path::Path,
-    ptr,
-    string::{String, ToString},
     sync::LazyLock,
-    vec::Vec,
 };
 
 use arbitrary_int::u4;

libafl_intelpt/tests/integration_tests_linux.rs

@@ -2,7 +2,8 @@
 #![cfg(feature = "libipt")]
 #![cfg(target_os = "linux")]
 
-use std::{arch::asm, process};
+use core::arch::asm;
+use std::process;
 
 use libafl_intelpt::{Image, IntelPT, availability};
 use nix::{

libafl_libfuzzer/Cargo.toml

@@ -7,6 +7,7 @@ readme = "../README.md"
 license = "MIT OR Apache-2.0"
 keywords = ["fuzzing", "testing", "security"]
 edition = "2024"
+rust-version = "1.85"
 categories = ["development-tools::testing"]
 
 include = [

libafl_libfuzzer/build.rs

@@ -1,5 +1,5 @@
+use core::error::Error;
 use std::{
-    error::Error,
     fs,
     fs::File,
     io::{BufRead, BufReader, BufWriter, Write},

libafl_libfuzzer/runtime/src/merge.rs

@@ -95,7 +95,6 @@ pub fn merge(
         }
     }
 
-    #[expect(clippy::deref_addrof)]
     let edges = unsafe { core::mem::take(&mut *(counters_maps_ptr_mut())) };
     let edges_observer = MultiMapObserver::new("edges", edges);
 

libafl_libfuzzer/src/lib.rs

@@ -111,7 +111,7 @@
     )
 )]
 
-use std::ffi::{c_char, c_int};
+use core::ffi::{c_char, c_int};
 
 pub use libfuzzer_sys::*;
 

libafl_nyx/src/cmplog.rs

@@ -1,7 +1,10 @@
 //! The Nyx `CmpLog` Observer
 //!
 //! Reads and parses the redqueen results written by QEMU-Nyx and adds them to the state as `CmpValuesMetadata`.
-use std::borrow::Cow;
+
+extern crate alloc;
+
+use alloc::borrow::Cow;
 
 use libafl::{
     Error, HasMetadata,
@@ -43,7 +46,7 @@ impl NyxCmpObserver {
 impl<I, S> Observer<I, S> for NyxCmpObserver
 where
     S: HasMetadata + HasExecutions,
-    I: std::fmt::Debug,
+    I: core::fmt::Debug,
 {
     fn pre_exec(&mut self, _state: &mut S, _input: &I) -> Result<(), Error> {
         unsafe {

libafl_nyx/src/executor.rs

@@ -1,6 +1,6 @@
+use core::marker::PhantomData;
 use std::{
     io::{Read, Seek},
-    marker::PhantomData,
     os::fd::AsRawFd,
 };
 
@@ -135,11 +135,11 @@ where
 }
 
 impl<S, OT> HasTimeout for NyxExecutor<S, OT> {
-    fn timeout(&self) -> std::time::Duration {
+    fn timeout(&self) -> core::time::Duration {
         self.helper.timeout
     }
 
-    fn set_timeout(&mut self, timeout: std::time::Duration) {
+    fn set_timeout(&mut self, timeout: core::time::Duration) {
         let micros = 1000000;
         let mut timeout_secs = timeout.as_secs();
         let mut timeout_micros = timeout.as_micros() - u128::from(timeout.as_secs() * micros);
@@ -163,7 +163,7 @@ impl<S, OT> NyxExecutor<S, OT> {
     /// Mutable borrow may only be used once at a time.
     pub unsafe fn trace_bits(self) -> &'static mut [u8] {
         unsafe {
-            std::slice::from_raw_parts_mut(self.helper.bitmap_buffer, self.helper.bitmap_size)
+            core::slice::from_raw_parts_mut(self.helper.bitmap_buffer, self.helper.bitmap_size)
         }
     }
 }

libafl_nyx/src/helper.rs

@@ -1,5 +1,6 @@
 /// [`NyxHelper`] is used to wrap `NyxProcess`
-use std::{fmt::Debug, fs::File, path::Path, time::Duration};
+use core::{fmt::Debug, time::Duration};
+use std::{fs::File, path::Path};
 
 use libafl::Error;
 use libnyx::{NyxConfig, NyxProcess, NyxProcessRole};

libafl_qemu/libafl_qemu_build/src/build.rs

@@ -1,8 +1,8 @@
+use core::str::FromStr;
 use std::{
     env, fs,
     path::{Path, PathBuf},
     process::Command,
-    str::FromStr,
 };
 
 use which::which;

libafl_qemu/libafl_qemu_build/src/lib.rs

@@ -1,10 +1,11 @@
 // #[rustversion::nightly]
-// use std::io::{BufRead, BufReader};
+extern crate alloc;
+
+use core::hash::Hasher;
 use std::{
     collections::hash_map,
     env,
     fs::{self, File},
-    hash::Hasher,
     io::{Read, Seek, SeekFrom, Write},
     path::{Path, PathBuf},
     process::Command,

libafl_qemu/libafl_qemu_sys/src/lib.rs

@@ -7,9 +7,9 @@ __Warning__: The documentation is built by default for `x86_64` in `usermode`. T
 
 #![cfg_attr(nightly, feature(used_with_arg))]
 
+use core::ffi::c_void;
 #[cfg(target_os = "linux")]
 use core::ops::BitAnd;
-use std::ffi::c_void;
 
 use num_enum::{IntoPrimitive, TryFromPrimitive};
 use strum_macros::EnumIter;

libafl_qemu/libafl_qemu_sys/src/usermode.rs

@@ -1,7 +1,7 @@
+#[cfg(feature = "python")]
+use core::convert::Infallible;
 #[cfg(target_os = "linux")]
 use core::{slice::from_raw_parts, str::from_utf8_unchecked};
-#[cfg(feature = "python")]
-use std::convert::Infallible;
 
 #[cfg(target_os = "linux")]
 use libc::{c_char, strlen};

libafl_qemu/src/modules/calls.rs

@@ -361,9 +361,7 @@ where
                 iaddr += insn.bytes().len() as GuestAddr;
 
                 #[cfg(feature = "usermode")]
-                unsafe {
-                    code = std::slice::from_raw_parts(qemu.g2h(iaddr), 512);
-                }
+                code = unsafe { std::slice::from_raw_parts(qemu.g2h(iaddr), 512) };
                 #[cfg(feature = "systemmode")]
                 if let Err(err) = qemu.read_mem(pc, code) {
                     // TODO handle faults

libafl_qemu/src/modules/cmplog.rs

@@ -346,7 +346,7 @@ impl CmpLogRoutinesModule {
             let mut code = {
                 #[cfg(feature = "usermode")]
                 unsafe {
-                    std::slice::from_raw_parts(qemu.g2h(pc), 512)
+                    std::slice::from_raw_parts(qemu.g2h(pc), 512);
                 }
                 #[cfg(feature = "systemmode")]
                 &mut [0; 512]
@@ -389,9 +389,7 @@ impl CmpLogRoutinesModule {
                 iaddr += insn.bytes().len() as GuestAddr;
 
                 #[cfg(feature = "usermode")]
-                unsafe {
-                    code = std::slice::from_raw_parts(qemu.g2h(iaddr), 512);
-                }
+                code = unsafe { std::slice::from_raw_parts(qemu.g2h(iaddr), 512) };
                 #[cfg(feature = "systemmode")]
                 unsafe {
                     qemu.read_mem(pc, code);

libafl_qemu/src/modules/utils/filters.rs

@@ -323,7 +323,7 @@ mod tests {
     use libafl_bolts::tuples::tuple_list;
 
     use crate::modules::{
-        EmulatorModule, EmulatorModuleTuple,
+        EmulatorModule,
         utils::filters::{
             AddressFilter, NopAddressFilter, NopPageFilter, PageFilter, StdAddressFilter,
             StdPageFilter,

libafl_targets/src/drcov.rs

@@ -63,7 +63,7 @@ impl From<DrCovBasicBlockEntry> for [u8; 8] {
             size_of::<[u8; 8]>(),
             "`DrCovBasicBlockEntry` size changed!"
         );
-        unsafe { std::slice::from_raw_parts(ptr::from_ref(&value).cast::<u8>(), 8) }
+        unsafe { core::slice::from_raw_parts(ptr::from_ref(&value).cast::<u8>(), 8) }
             .try_into()
             .unwrap()
     }
@@ -75,7 +75,7 @@ impl From<&DrCovBasicBlockEntry> for &[u8] {
         // The value is a c struct.
         // Casting its pointer to bytes should be safe.
         unsafe {
-            std::slice::from_raw_parts(
+            core::slice::from_raw_parts(
                 ptr::from_ref(value).cast::<u8>(),
                 size_of::<DrCovBasicBlockEntry>(),
             )
@@ -539,12 +539,8 @@ impl DrCovReader {
 
 #[cfg(test)]
 mod test {
-    use std::{
-        env::temp_dir,
-        fs,
-        path::PathBuf,
-        string::{String, ToString},
-    };
+    use alloc::string::{String, ToString};
+    use std::{env::temp_dir, fs, path::PathBuf};
 
     use rangemap::RangeMap;
 

libafl_targets/src/libfuzzer/mutators.rs

@@ -1,13 +1,10 @@
 use alloc::{
     borrow::Cow,
+    boxed::Box,
     rc::{Rc, Weak},
+    vec::Vec,
 };
-use std::{
-    cell::RefCell,
-    marker::PhantomData,
-    ops::Deref,
-    prelude::rust_2015::{Box, Vec},
-};
+use core::{cell::RefCell, marker::PhantomData, ops::Deref};
 
 use libafl::{
     Error,

libafl_targets/src/libfuzzer/observers/oom.rs

@@ -1,6 +1,9 @@
 use alloc::borrow::Cow;
-use core::{ffi::c_void, fmt::Debug};
-use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+use core::{
+    ffi::c_void,
+    fmt::Debug,
+    sync::atomic::{AtomicBool, AtomicUsize, Ordering},
+};
 
 use libafl::{
     Error,

libafl_targets/src/sancov_8bit.rs

@@ -11,6 +11,7 @@ pub static mut COUNTERS_MAPS: Vec<OwnedMutSlice<'static, u8>> = Vec::new();
 ///
 /// # Safety
 /// The resulting pointer points to a global. Handle with care!
+#[must_use]
 pub unsafe fn counters_maps_ptr() -> *const Vec<OwnedMutSlice<'static, u8>> {
     &raw const COUNTERS_MAPS
 }
@@ -29,8 +30,8 @@ pub unsafe fn counters_maps_ptr_mut() -> *mut Vec<OwnedMutSlice<'static, u8>> {
 /// You are responsible for ensuring there is no multi-mutability!
 #[must_use]
 pub unsafe fn extra_counters() -> Vec<OwnedMutSlice<'static, u8>> {
-    let counter_maps = unsafe { &*counters_maps_ptr() };
-    counter_maps
+    let counters_maps = unsafe { &*counters_maps_ptr() };
+    counters_maps
         .iter()
         .map(|counters| unsafe {
             OwnedMutSlice::from_raw_parts_mut(
@@ -49,8 +50,8 @@ pub unsafe fn extra_counters() -> Vec<OwnedMutSlice<'static, u8>> {
 #[expect(clippy::cast_sign_loss)]
 pub unsafe extern "C" fn __sanitizer_cov_8bit_counters_init(start: *mut u8, stop: *mut u8) {
     unsafe {
-        let counter_maps = &mut *counters_maps_ptr_mut();
-        for existing in counter_maps {
+        let counters_maps = &mut *counters_maps_ptr_mut();
+        for existing in counters_maps {
             let range = existing.as_slice_mut().as_mut_ptr()
                 ..=existing
                     .as_slice_mut()
@@ -66,9 +67,9 @@ pub unsafe extern "C" fn __sanitizer_cov_8bit_counters_init(start: *mut u8, stop
             }
         }
 
-        let counter_maps = &mut *counters_maps_ptr_mut();
+        let counters_maps = &mut *counters_maps_ptr_mut();
         // we didn't overlap; keep going
-        counter_maps.push(OwnedMutSlice::from_raw_parts_mut(
+        counters_maps.push(OwnedMutSlice::from_raw_parts_mut(
             start,
             stop.offset_from(start) as usize,
         ));