Merge #732: Fix hashes version range in 0.29.1

f74877a Release version 0.29.1 (Martin Habovstiak)
7ad2f2e Don't use `core::i32::MAX` (Martin Habovstiak)
05c5937 Update panic message handling (Martin Habovstiak)
938dba6 Whitelist known cfgs (Martin Habovstiak)
ad69619 Fix the `hashes` dependency range. (Martin Habovstiak)
caf2f1a Deprecate the `hashes` reexport (Martin Habovstiak)

Pull request description:

  See rust-bitcoin/rust-bitcoin#3296 (comment)

ACKs for top commit:
  apoelstra:
    ACK f74877a; tested final commit locally

Tree-SHA512: adebf04d91e46c7952b7bc3a2cfa64c2d372a6c7295e57c356be72862292e23e7d8e04be47843634cb7680272894f1c66414ebc1e724abaec025938312d89901

CHANGELOG.md

@@ -1,3 +1,12 @@
+# 0.29.1 - 2024-09-06
+
+* Deprecate `hashes` reexport
+
+  Because the reexport can have any of the *incompatible* versions using it is prone to breakage.
+  The `bitcoin_hashes` crate is not used in our API anyway, so you should just depend on it yourself
+  using a version range that's appropriate for your crate.
+* Fix version range of the `bitcoin_hashes` crate.
+
 # 0.29.0 - 2024-04-02
 
 * Deprecate `ThirtyTwoByteHash` [#686](https://github.com/rust-bitcoin/rust-secp256k1/pull/686)

Cargo-minimal.lock

@@ -257,7 +257,7 @@ checksum = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
 
 [[package]]
 name = "secp256k1"
-version = "0.29.0"
+version = "0.29.1"
 dependencies = [
  "bincode",
  "bitcoin_hashes",

Cargo-recent.lock

@@ -178,7 +178,7 @@ checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
 
 [[package]]
 name = "secp256k1"
-version = "0.29.0"
+version = "0.29.1"
 dependencies = [
  "bincode",
  "bitcoin_hashes",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "secp256k1"
-version = "0.29.0"
+version = "0.29.1"
 authors = [ "Dawid Ciężarkiewicz <[email protected]>",
             "Andrew Poelstra <[email protected]>" ]
 license = "CC0-1.0"
@@ -41,7 +41,7 @@ serde = { version = "1.0.103", default-features = false, optional = true }
 
 # You likely only want to enable these if you explicitly do not want to use "std", otherwise enable
 # the respective -std feature e.g., hashes-std
-hashes = { package = "bitcoin_hashes", version = ">= 0.12, <= 0.14", default-features = false, optional = true }
+hashes = { package = "bitcoin_hashes", version = ">= 0.12, < 0.15", default-features = false, optional = true }
 rand = { version = "0.8", default-features = false, optional = true }
 
 [dev-dependencies]
@@ -54,6 +54,8 @@ bincode = "1.3.3"
 wasm-bindgen-test = "0.3"
 getrandom = { version = "0.2", features = ["js"] }
 
+[lints.rust]
+unexpected_cfgs = { level = "deny", check-cfg = ['cfg(bench)', 'cfg(secp256k1_fuzz)', 'cfg(rust_secp_no_symbol_renaming)'] }
 
 [[example]]
 name = "sign_verify_recovery"

no_std_test/src/main.rs

@@ -29,7 +29,6 @@
 
 #![feature(start)]
 #![feature(core_intrinsics)]
-#![feature(panic_info_message)]
 #![feature(alloc_error_handler)]
 #![no_std]
 extern crate libc;
@@ -48,7 +47,7 @@ extern crate wee_alloc;
 #[global_allocator]
 static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
 
-use core::fmt::{self, write, Write};
+use core::fmt::{self, Write};
 use core::intrinsics;
 use core::panic::PanicInfo;
 
@@ -170,9 +169,9 @@ impl Write for Print {
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {
     unsafe { libc::printf("shi1\n\0".as_ptr() as _) };
-    let msg = info.message().unwrap();
+    let msg = info.message();
     let mut buf = Print::new();
-    write(&mut buf, *msg).unwrap();
+    write!(&mut buf, "{}", msg).unwrap();
     buf.print();
     intrinsics::abort()
 }

secp256k1-sys/Cargo.toml

@@ -32,3 +32,6 @@ recovery = []
 lowmemory = []
 std = ["alloc"]
 alloc = []
+
+[lints.rust]
+unexpected_cfgs = { level = "deny", check-cfg = ['cfg(bench)', 'cfg(secp256k1_fuzz)', 'cfg(rust_secp_no_symbol_renaming)'] }

src/key.rs

@@ -638,10 +638,9 @@ impl PublicKey {
     /// # }
     /// ```
     pub fn combine_keys(keys: &[&PublicKey]) -> Result<PublicKey, Error> {
-        use core::i32::MAX;
         use core::mem::transmute;
 
-        if keys.is_empty() || keys.len() > MAX as usize {
+        if keys.is_empty() || keys.len() > i32::MAX as usize {
             return Err(InvalidPublicKeySum);
         }
 

src/lib.rs

@@ -153,8 +153,12 @@ extern crate core;
 #[cfg(bench)]
 extern crate test;
 
+/// Deprecated reexport of the `bitcoin-hashes` crate.
 #[cfg(feature = "hashes")]
-pub extern crate hashes;
+#[deprecated(since = "0.29.1", note = "Depend on `hashes` in your own crate.")]
+pub mod hashes {
+    pub use ::hashes::*;
+}
 
 #[macro_use]
 mod macros;