frozen-abi: add re-exports / patch to support rust edition 2021/2024

frozen-abi-macro/src/lib.rs

@@ -345,9 +345,9 @@ fn quote_for_test(
         quote! {
             #[test]
             fn test_abi_digest() {
-                use ::rand::{SeedableRng, RngCore};
-                use ::rand_chacha::ChaCha8Rng;
-                use ::bincode;
+                use ::solana_frozen_abi::rand::{SeedableRng, RngCore};
+                use ::solana_frozen_abi::rand_chacha::ChaCha8Rng;
+                use ::solana_frozen_abi::bincode;
                 use ::solana_frozen_abi::stable_abi::StableAbi;
 
                 let mut rng = ChaCha8Rng::seed_from_u64(20666175621446498);

frozen-abi/Cargo.toml

@@ -35,9 +35,14 @@ solana-frozen-abi-macro = { workspace = true }
 thiserror = { workspace = true }
 
 [target.'cfg(not(target_os = "solana"))'.dependencies]
+# This dependency is used only to back `frozen-abi` StableAbi API
+bincode = "1.3.3"
 im = { workspace = true, features = ["rayon", "serde"] }
 memmap2 = { workspace = true }
-rand = { workspace = true }
+# These dependencies are used only to back `frozen-abi` StableAbi API,
+# to avoid version skew and keep digest computation stable regardless of consumer dependencies.
+rand = "0.8.5"
+rand_chacha = "0.3.1"
 
 [target.'cfg(not(target_os = "solana"))'.dev-dependencies]
 bitflags = { workspace = true, features = ["serde"] }

frozen-abi/src/lib.rs

@@ -19,6 +19,16 @@ pub mod stable_abi;
 #[macro_use]
 extern crate solana_frozen_abi_macro;
 
+#[cfg(feature = "frozen-abi")]
+#[cfg(not(target_os = "solana"))]
+pub use bincode;
+#[cfg(feature = "frozen-abi")]
+#[cfg(not(target_os = "solana"))]
+pub use rand;
+#[cfg(feature = "frozen-abi")]
+#[cfg(not(target_os = "solana"))]
+pub use rand_chacha;
+
 // Not public API. Previously referenced by macro-generated code. Remove the
 // `log` dependency from Cargo.toml when this is cleaned up in the next major
 // version bump

frozen-abi/src/stable_abi.rs

@@ -5,6 +5,6 @@ pub trait StableAbi: Sized {
     where
         Standard: rand::distributions::Distribution<Self>,
     {
-        rng.gen::<Self>()
+        rng.r#gen::<Self>()
     }
 }