Use nonzero! macro (#2589)

* nonzero_lit

* nonzero

* std instead of core

* a

* l

* test

* import

* api

* api

* aaaaa

* apiapi

* api

* api

* api

* mm

* api

* non zero

* FMT

* pls

* nnnaaasdfadsfafdsa

* pls

* MM

* fix

* a

* sat add

* aa

* mistake

* unreachable

* no generic

* api change

* a

docs/listings/baby_fuzzer/listing-04/src/main.rs

@@ -3,7 +3,6 @@ extern crate libafl;
 extern crate libafl_bolts;
 
 use std::path::PathBuf;
-
 use libafl::{
     corpus::{InMemoryCorpus, OnDiskCorpus},
     events::SimpleEventManager,
@@ -15,7 +14,7 @@ use libafl::{
     schedulers::QueueScheduler,
     state::StdState,
 };
-use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice, nonzero};
 /* ANCHOR_END: use */
 
 fn main() {
@@ -77,7 +76,7 @@ fn main() {
 
     /* ANCHOR: generator */
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

docs/listings/baby_fuzzer/listing-05/src/main.rs

@@ -15,7 +15,7 @@ use libafl::{
     schedulers::QueueScheduler,
     state::StdState,
 };
-use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice, nonzero};
 use std::path::PathBuf;
 /* ANCHOR_END: use */
 
@@ -105,7 +105,7 @@ fn main() {
     /* ANCHOR_END: executor_with_observer */
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

docs/listings/baby_fuzzer/listing-06/src/main.rs

@@ -1,6 +1,7 @@
 /* ANCHOR: use */
 extern crate libafl;
 extern crate libafl_bolts;
+use std::num::NonZeroUsize;
 
 use libafl::{
     corpus::{InMemoryCorpus, OnDiskCorpus},
@@ -17,7 +18,7 @@ use libafl::{
     stages::mutational::StdMutationalStage,
     state::StdState,
 };
-use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice, nonzero};
 use std::path::PathBuf;
 /* ANCHOR_END: use */
 
@@ -97,7 +98,7 @@ fn main() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/baby_fuzzer/src/main.rs

@@ -20,7 +20,7 @@ use libafl::{
     stages::mutational::StdMutationalStage,
     state::StdState,
 };
-use libafl_bolts::{current_nanos, rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{current_nanos, nonzero, rands::StdRand, tuples::tuple_list, AsSlice};
 
 /// Coverage map with explicit assignments due to the lack of instrumentation
 static mut SIGNALS: [u8; 16] = [0; 16];
@@ -116,7 +116,7 @@ pub fn main() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/baby_fuzzer_minimizing/src/main.rs

@@ -86,7 +86,7 @@ pub fn main() -> Result<(), Error> {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/baby_fuzzer_swap_differential/src/main.rs

@@ -23,7 +23,7 @@ use libafl::{
     stages::mutational::StdMutationalStage,
     state::{HasSolutions, StdState},
 };
-use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{nonzero, rands::StdRand, tuples::tuple_list, AsSlice};
 use libafl_targets::{edges_max_num, DifferentialAFLMapSwapObserver};
 #[cfg(not(miri))]
 use mimalloc::MiMalloc;
@@ -247,7 +247,7 @@ pub fn main() {
     );
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/backtrace_baby_fuzzers/c_code_with_fork_executor/src/main.rs

@@ -17,6 +17,7 @@ use libafl::{
     state::StdState,
 };
 use libafl_bolts::{
+    nonzero,
     ownedref::OwnedRefMut,
     rands::StdRand,
     shmem::{ShMemProvider, StdShMemProvider},
@@ -103,7 +104,7 @@ pub fn main() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/backtrace_baby_fuzzers/c_code_with_inprocess_executor/src/main.rs

@@ -16,7 +16,7 @@ use libafl::{
     stages::mutational::StdMutationalStage,
     state::StdState,
 };
-use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{nonzero, rands::StdRand, tuples::tuple_list, AsSlice};
 use libc::c_uchar;
 extern crate libc;
 
@@ -89,7 +89,7 @@ pub fn main() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/backtrace_baby_fuzzers/command_executor/src/main.rs

@@ -25,6 +25,7 @@ use libafl::{
     Error,
 };
 use libafl_bolts::{
+    nonzero,
     rands::StdRand,
     shmem::{unix_shmem, ShMem, ShMemId, ShMemProvider},
     tuples::tuple_list,
@@ -112,7 +113,7 @@ pub fn main() {
     let mut executor = MyExecutor { shmem_id }.into_executor(tuple_list!(observer, bt_observer));
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/backtrace_baby_fuzzers/forkserver_executor/src/main.rs

@@ -21,6 +21,7 @@ use libafl_bolts::shmem::StdShMemProvider;
 #[cfg(target_vendor = "apple")]
 use libafl_bolts::shmem::UnixShMemProvider;
 use libafl_bolts::{
+    nonzero,
     rands::StdRand,
     shmem::{ShMem, ShMemProvider},
     tuples::tuple_list,
@@ -97,7 +98,7 @@ pub fn main() {
         .unwrap();
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(3).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/backtrace_baby_fuzzers/rust_code_with_fork_executor/src/main.rs

@@ -19,6 +19,7 @@ use libafl::{
     state::StdState,
 };
 use libafl_bolts::{
+    nonzero,
     ownedref::OwnedRefMut,
     rands::StdRand,
     shmem::{unix_shmem, ShMem, ShMemProvider},
@@ -122,7 +123,7 @@ pub fn main() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/baby/backtrace_baby_fuzzers/rust_code_with_inprocess_executor/src/main.rs

@@ -18,7 +18,7 @@ use libafl::{
     stages::mutational::StdMutationalStage,
     state::StdState,
 };
-use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{nonzero, rands::StdRand, tuples::tuple_list, AsSlice};
 
 /// Coverage map with explicit assignments due to the lack of instrumentation
 static mut SIGNALS: [u8; 16] = [0; 16];
@@ -113,7 +113,7 @@ pub fn main() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/forkserver/baby_fuzzer_with_forkexecutor/src/main.rs

@@ -18,6 +18,7 @@ use libafl::{
     state::StdState,
 };
 use libafl_bolts::{
+    nonzero,
     rands::StdRand,
     shmem::{unix_shmem, ShMemProvider},
     tuples::tuple_list,
@@ -115,7 +116,7 @@ pub fn main() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/forkserver/forkserver_libafl_cc/src/main.rs

@@ -206,8 +206,7 @@ pub fn main() {
 
     // Setup a mutational stage with a basic bytes mutator
     let mutator =
-        StdScheduledMutator::with_max_stack_pow(havoc_mutations().merge(tokens_mutations()), 6)
-            .unwrap();
+        StdScheduledMutator::with_max_stack_pow(havoc_mutations().merge(tokens_mutations()), 6);
     let mut stages = tuple_list!(StdMutationalStage::new(mutator));
 
     fuzzer

fuzzers/forkserver/forkserver_simple/src/main.rs

@@ -202,8 +202,7 @@ pub fn main() {
 
     // Setup a mutational stage with a basic bytes mutator
     let mutator =
-        StdScheduledMutator::with_max_stack_pow(havoc_mutations().merge(tokens_mutations()), 6)
-            .unwrap();
+        StdScheduledMutator::with_max_stack_pow(havoc_mutations().merge(tokens_mutations()), 6);
     let mut stages = tuple_list!(StdMutationalStage::new(mutator));
 
     fuzzer

fuzzers/fuzz_anything/baby_fuzzer_wasm/src/lib.rs

@@ -15,7 +15,9 @@ use libafl::{
     state::{HasSolutions, StdState},
     Fuzzer, StdFuzzer,
 };
-use libafl_bolts::{rands::StdRand, serdeany::RegistryBuilder, tuples::tuple_list, AsSlice};
+use libafl_bolts::{
+    nonzero, rands::StdRand, serdeany::RegistryBuilder, tuples::tuple_list, AsSlice,
+};
 use wasm_bindgen::prelude::*;
 use web_sys::{Performance, Window};
 
@@ -126,7 +128,7 @@ pub fn fuzz() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/fuzz_anything/baby_no_std/src/main.rs

@@ -25,7 +25,7 @@ use libafl::{
     stages::mutational::StdMutationalStage,
     state::StdState,
 };
-use libafl_bolts::{rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{nonzero, rands::StdRand, tuples::tuple_list, AsSlice};
 #[cfg(any(windows, unix))]
 use libc::{abort, printf};
 use static_alloc::Bump;
@@ -144,7 +144,7 @@ pub extern "C" fn main(_argc: isize, _argv: *const *const u8) -> isize {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/fuzz_anything/libafl_atheris/src/lib.rs

@@ -34,6 +34,7 @@ use libafl::{
 };
 use libafl_bolts::{
     core_affinity::Cores,
+    nonzero,
     rands::StdRand,
     shmem::{ShMemProvider, StdShMemProvider},
     tuples::{tuple_list, Merge},
@@ -240,7 +241,7 @@ pub extern "C" fn LLVMFuzzerRunDriver(
         if state.must_load_initial_inputs() {
             if input_dirs.is_empty() {
                 // Generator of printable bytearrays of max size 32
-                let mut generator = RandBytesGenerator::new(32).unwrap();
+                let mut generator = RandBytesGenerator::new(nonzero!(32));
 
                 // Generate 8 initial inputs
                 state

fuzzers/fuzz_anything/push_harness/src/main.rs

@@ -18,7 +18,7 @@ use libafl::{
     stages::mutational::StdMutationalStage,
     state::StdState,
 };
-use libafl_bolts::{current_nanos, rands::StdRand, tuples::tuple_list, AsSlice};
+use libafl_bolts::{current_nanos, nonzero, rands::StdRand, tuples::tuple_list, AsSlice};
 
 /// Coverage map with explicit assignments due to the lack of instrumentation
 static mut SIGNALS: [u8; 16] = [0; 16];
@@ -93,7 +93,7 @@ fn input_generator() {
     .expect("Failed to create the Executor");
 
     // Generator of printable bytearrays of max size 32
-    let mut generator = RandPrintablesGenerator::new(32).unwrap();
+    let mut generator = RandPrintablesGenerator::new(nonzero!(32));
 
     // Generate 8 initial inputs
     state

fuzzers/inprocess/fuzzbench_text/src/lib.rs

@@ -602,8 +602,8 @@ fn fuzz_text(
             GrimoireRandomDeleteMutator::new(),
         ),
         3,
-    )
-    .unwrap();
+    );
+
     let grimoire = StdMutationalStage::transforming(grimoire_mutator);
 
     // A minimization+queue policy to get testcasess from the corpus

fuzzers/structure_aware/baby_fuzzer_custom_input/src/input.rs

@@ -1,3 +1,4 @@
+use core::num::NonZeroUsize;
 use std::{
     borrow::Cow,
     hash::{DefaultHasher, Hash, Hasher},
@@ -59,20 +60,20 @@ impl CustomInput {
 }
 
 /// A generator for [`CustomInput`] used in this example
-pub struct CustomInputGenerator<S: HasRand> {
-    pub bytes_generator: RandBytesGenerator<S>,
+pub struct CustomInputGenerator {
+    pub bytes_generator: RandBytesGenerator,
 }
 
-impl<S: HasRand> CustomInputGenerator<S> {
+impl CustomInputGenerator {
     /// Creates a new [`CustomInputGenerator`]
-    pub fn new(max_len: usize) -> Result<Self, Error> {
-        Ok(Self {
-            bytes_generator: RandBytesGenerator::new(max_len)?,
-        })
+    pub fn new(max_len: NonZeroUsize) -> Self {
+        Self {
+            bytes_generator: RandBytesGenerator::new(max_len),
+        }
     }
 }
 
-impl<S> Generator<CustomInput, S> for CustomInputGenerator<S>
+impl<S> Generator<CustomInput, S> for CustomInputGenerator
 where
     S: HasRand,
 {
@@ -99,15 +100,12 @@ pub struct ToggleOptionalByteArrayMutator<G> {
     generator: G,
 }
 
-impl<S> ToggleOptionalByteArrayMutator<RandBytesGenerator<S>>
-where
-    S: HasRand,
-{
+impl ToggleOptionalByteArrayMutator<RandBytesGenerator> {
     /// Creates a new [`ToggleOptionalByteArrayMutator`]
-    pub fn new(length: usize) -> Result<Self, Error> {
-        Ok(Self {
-            generator: RandBytesGenerator::new(length)?,
-        })
+    pub fn new(length: NonZeroUsize) -> Self {
+        Self {
+            generator: RandBytesGenerator::new(length),
+        }
     }
 }