Bump rand to 0.9 and getrandom to 0.3

src/tools/miri/Cargo.lock

@@ -351,7 +351,19 @@ checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43a49c392881ce6d5c3b8cb70f98717b7c07aabbdff06687b9030dbfbe2725f8"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi 0.13.3+wasi-0.2.2",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -529,12 +541,12 @@ dependencies = [
  "chrono-tz",
  "colored",
  "directories",
- "getrandom",
+ "getrandom 0.3.1",
  "libc",
  "libffi",
  "libloading",
  "measureme",
- "rand",
+ "rand 0.9.0",
  "regex",
  "rustc_version",
  "smallvec",
@@ -662,7 +674,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48e4cc64c2ad9ebe670cb8fd69dd50ae301650392e81c05f9bfcb2d5bdbc24b0"
 dependencies = [
  "phf_shared",
- "rand",
+ "rand 0.8.5",
 ]
 
 [[package]]
@@ -692,7 +704,7 @@ version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77957b295656769bb8ad2b6a6b09d897d94f05c41b069aede1fcdaa675eaea04"
 dependencies = [
- "zerocopy",
+ "zerocopy 0.7.35",
 ]
 
 [[package]]
@@ -729,19 +741,28 @@ version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
- "libc",
+ "rand_core 0.6.4",
+]
+
+[[package]]
+name = "rand"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3779b94aeb87e8bd4e834cee3650289ee9e0d5677f976ecdb6d219e5f4f6cd94"
+dependencies = [
  "rand_chacha",
- "rand_core",
+ "rand_core 0.9.0",
+ "zerocopy 0.8.14",
 ]
 
 [[package]]
 name = "rand_chacha"
-version = "0.3.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.9.0",
 ]
 
 [[package]]
@@ -749,8 +770,15 @@ name = "rand_core"
 version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+
+[[package]]
+name = "rand_core"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b08f3c9802962f7e1b25113931d94f43ed9725bebc59db9d0c3e9a23b67e15ff"
 dependencies = [
- "getrandom",
+ "getrandom 0.3.1",
+ "zerocopy 0.8.14",
 ]
 
 [[package]]
@@ -768,7 +796,7 @@ version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd283d9651eeda4b2a83a43c1c91b266c40fd76ecd39a50a8c630ae69dc72891"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.15",
  "libredox",
  "thiserror",
 ]
@@ -1105,6 +1133,15 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "wasi"
+version = "0.13.3+wasi-0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26816d2e1a4a36a2940b96c5296ce403917633dff8f3440e9b236ed6f6bacad2"
+dependencies = [
+ "wit-bindgen-rt",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"
@@ -1244,6 +1281,15 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.33.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3268f3d866458b787f390cf61f4bbb563b922d091359f9608842999eaee3943c"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "zerocopy"
 version = "0.7.35"
@@ -1251,7 +1297,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
 dependencies = [
  "byteorder",
- "zerocopy-derive",
+ "zerocopy-derive 0.7.35",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a367f292d93d4eab890745e75a778da40909cab4d6ff8173693812f79c4a2468"
+dependencies = [
+ "zerocopy-derive 0.8.14",
 ]
 
 [[package]]
@@ -1264,3 +1319,14 @@ dependencies = [
  "quote",
  "syn",
 ]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3931cb58c62c13adec22e38686b559c86a30565e16ad6e8510a337cedc611e1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]

src/tools/miri/Cargo.toml

@@ -18,8 +18,8 @@ test = false    # we have no unit tests
 doctest = false # and no doc tests
 
 [dependencies]
-getrandom = { version = "0.2", features = ["std"] }
-rand = "0.8"
+getrandom = { version = "0.3", features = ["std"] }
+rand = "0.9"
 smallvec = { version = "1.7", features = ["drain_filter"] }
 aes = { version = "0.8.3", features = ["hazmat"] }
 measureme = "11"

src/tools/miri/src/alloc_addresses/mod.rs

@@ -217,7 +217,7 @@ trait EvalContextExtPriv<'tcx>: crate::MiriInterpCxExt<'tcx> {
             // We have to pick a fresh address.
             // Leave some space to the previous allocation, to give it some chance to be less aligned.
             // We ensure that `(global_state.next_base_addr + slack) % 16` is uniformly distributed.
-            let slack = rng.gen_range(0..16);
+            let slack = rng.random_range(0..16);
             // From next_base_addr + slack, round up to adjust for alignment.
             let base_addr = global_state
                 .next_base_addr

src/tools/miri/src/alloc_addresses/reuse_pool.rs

@@ -58,7 +58,7 @@ impl ReusePool {
         // We don't remember stack addresses: there's a lot of them (so the perf impact is big),
         // and we only want to reuse stack slots within the same thread or else we'll add a lot of
         // undesired synchronization.
-        if kind == MemoryKind::Stack || !rng.gen_bool(self.address_reuse_rate) {
+        if kind == MemoryKind::Stack || !rng.random_bool(self.address_reuse_rate) {
             return;
         }
         let clock = clock();
@@ -88,10 +88,10 @@ impl ReusePool {
         thread: ThreadId,
     ) -> Option<(u64, Option<VClock>)> {
         // Determine whether we'll even attempt a reuse. As above, we don't do reuse for stack addresses.
-        if kind == MemoryKind::Stack || !rng.gen_bool(self.address_reuse_rate) {
+        if kind == MemoryKind::Stack || !rng.random_bool(self.address_reuse_rate) {
             return None;
         }
-        let cross_thread_reuse = rng.gen_bool(self.address_reuse_cross_thread_rate);
+        let cross_thread_reuse = rng.random_bool(self.address_reuse_cross_thread_rate);
         // Determine the pool to take this from.
         let subpool = self.subpool(align);
         // Let's see if we can find something of the right size. We want to find the full range of
@@ -118,7 +118,7 @@ impl ReusePool {
             return None;
         }
         // Pick a random element with the desired size.
-        let idx = rng.gen_range(begin..end);
+        let idx = rng.random_range(begin..end);
         // Remove it from the pool and return.
         let (chosen_addr, chosen_size, chosen_thread, clock) = subpool.remove(idx);
         debug_assert!(chosen_size >= size && chosen_addr % align.bytes() == 0);

src/tools/miri/src/concurrency/data_race.rs

@@ -830,7 +830,7 @@ pub trait EvalContextExt<'tcx>: MiriInterpCxExt<'tcx> {
         let success_rate = 1.0 - this.machine.cmpxchg_weak_failure_rate;
         let cmpxchg_success = eq.to_scalar().to_bool()?
             && if can_fail_spuriously {
-                this.machine.rng.get_mut().gen_bool(success_rate)
+                this.machine.rng.get_mut().random_bool(success_rate)
             } else {
                 true
             };

src/tools/miri/src/concurrency/thread.rs

@@ -1138,7 +1138,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
         use rand::Rng as _;
 
         let this = self.eval_context_mut();
-        if this.machine.rng.get_mut().gen_bool(this.machine.preemption_rate) {
+        if this.machine.rng.get_mut().random_bool(this.machine.preemption_rate) {
             this.yield_active_thread();
         }
     }

src/tools/miri/src/helpers.rs

@@ -421,7 +421,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
 
         if this.machine.communicate() {
             // Fill the buffer using the host's rng.
-            getrandom::getrandom(&mut data)
+            getrandom::fill(&mut data)
                 .map_err(|err| err_unsup_format!("host getrandom failed: {}", err))?;
         } else {
             let rng = this.machine.rng.get_mut();

src/tools/miri/src/intrinsics/mod.rs

@@ -141,7 +141,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                 // FIXME: should we check for validity here? It's tricky because we do not have a
                 // place. Codegen does not seem to set any attributes like `noundef` for intrinsic
                 // calls, so we don't *have* to do anything.
-                let branch: bool = this.machine.rng.get_mut().gen();
+                let branch: bool = this.machine.rng.get_mut().random();
                 this.write_scalar(Scalar::from_bool(branch), dest)?;
             }
 
@@ -289,7 +289,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                 let a = this.read_scalar(a)?.to_f32()?;
                 let b = this.read_scalar(b)?.to_f32()?;
                 let c = this.read_scalar(c)?.to_f32()?;
-                let fuse: bool = this.machine.rng.get_mut().gen();
+                let fuse: bool = this.machine.rng.get_mut().random();
                 let res = if fuse {
                     // FIXME: Using host floats, to work around https://github.com/rust-lang/rustc_apfloat/issues/11
                     a.to_host().mul_add(b.to_host(), c.to_host()).to_soft()
@@ -304,7 +304,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                 let a = this.read_scalar(a)?.to_f64()?;
                 let b = this.read_scalar(b)?.to_f64()?;
                 let c = this.read_scalar(c)?.to_f64()?;
-                let fuse: bool = this.machine.rng.get_mut().gen();
+                let fuse: bool = this.machine.rng.get_mut().random();
                 let res = if fuse {
                     // FIXME: Using host floats, to work around https://github.com/rust-lang/rustc_apfloat/issues/11
                     a.to_host().mul_add(b.to_host(), c.to_host()).to_soft()

src/tools/miri/src/intrinsics/simd.rs

@@ -304,7 +304,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
                     let c = this.read_scalar(&this.project_index(&c, i)?)?;
                     let dest = this.project_index(&dest, i)?;
 
-                    let fuse: bool = intrinsic_name == "fma" || this.machine.rng.get_mut().gen();
+                    let fuse: bool = intrinsic_name == "fma" || this.machine.rng.get_mut().random();
 
                     // Works for f32 and f64.
                     // FIXME: using host floats to work around https://github.com/rust-lang/miri/issues/2468.

src/tools/miri/src/machine.rs

@@ -1499,7 +1499,7 @@ impl<'tcx> Machine<'tcx> for MiriMachine<'tcx> {
             catch_unwind: None,
             timing,
             is_user_relevant: ecx.machine.is_user_relevant(&frame),
-            salt: ecx.machine.rng.borrow_mut().gen::<usize>() % ADDRS_PER_ANON_GLOBAL,
+            salt: ecx.machine.rng.borrow_mut().random_range(0..ADDRS_PER_ANON_GLOBAL),
             data_race: ecx.machine.data_race.as_ref().map(|_| data_race::FrameState::default()),
         };
 
@@ -1714,7 +1714,7 @@ impl<'tcx> Machine<'tcx> for MiriMachine<'tcx> {
         if unique {
             CTFE_ALLOC_SALT
         } else {
-            ecx.machine.rng.borrow_mut().gen::<usize>() % ADDRS_PER_ANON_GLOBAL
+            ecx.machine.rng.borrow_mut().random_range(0..ADDRS_PER_ANON_GLOBAL)
         }
     }
 

src/tools/miri/src/math.rs

@@ -1,5 +1,4 @@
 use rand::Rng as _;
-use rand::distributions::Distribution as _;
 use rustc_apfloat::Float as _;
 use rustc_apfloat::ieee::IeeeFloat;
 
@@ -18,13 +17,12 @@ pub(crate) fn apply_random_float_error<F: rustc_apfloat::Float>(
     // (When read as binary, the position of the first `1` determines the exponent,
     // and the remaining bits fill the mantissa. `PREC` is one plus the size of the mantissa,
     // so this all works out.)
-    let dist = rand::distributions::Uniform::new(0, 1 << F::PRECISION);
-    let r = F::from_u128(dist.sample(rng)).value;
+    let r = F::from_u128(rng.random_range(0..(1 << F::PRECISION))).value;
     // Multiply this with 2^(scale - PREC). The result is between 0 and
     // 2^PREC * 2^(scale - PREC) = 2^scale.
     let err = r.scalbn(err_scale.strict_sub(F::PRECISION.try_into().unwrap()));
     // give it a random sign
-    let err = if rng.gen::<bool>() { -err } else { err };
+    let err = if rng.random() { -err } else { err };
     // multiple the value with (1+err)
     (val * (F::from_u128(1).value + err).value).value
 }

src/tools/miri/src/operator.rs

@@ -108,7 +108,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
         // Pick one of the NaNs.
         let nan = nans.choose(&mut *rand).unwrap();
         // Non-deterministically flip the sign.
-        if rand.gen() {
+        if rand.random() {
             // This will properly flip even for NaN.
             -nan
         } else {

src/tools/miri/src/shims/unix/fs.rs

@@ -1550,7 +1550,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
         }
     }
     fn mkstemp(&mut self, template_op: &OpTy<'tcx>) -> InterpResult<'tcx, Scalar> {
-        use rand::seq::SliceRandom;
+        use rand::seq::IndexedRandom;
 
         // POSIX defines the template string.
         const TEMPFILE_TEMPLATE_STR: &str = "XXXXXX";