update msrv, fix fallout

.github/workflows/ci.yaml

@@ -1,114 +1,76 @@
 name: CI
 on:
   pull_request:
-  push: # bors
-    branches:
-      - staging
-      - trying
+  merge_group:
 
 env:
-  CI: 1
-  CARGO_INCREMENTAL: 0
-  CARGO_PROFILE_DEV_DEBUG: false
-  CARGO_PROFILE_RELEASE_DEBUG: false
   RUSTFLAGS: -D warnings -W unreachable-pub
-  MIRIFLAGS: -Zmiri-check-number-validity -Zmiri-symbolic-alignment-check -Zmiri-tag-raw-pointers
+  MIRIFLAGS: -Zmiri-strict-provenance -Zmiri-symbolic-alignment-check
 
 jobs:
   cargo-test:
     name: Tests
-    if: ${{ github.event.pusher.name == 'bors[bot]' }}
     runs-on: ubuntu-latest
     steps:
 
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: 1.59.0
-          profile: minimal
-          override: true
+        uses: dtolnay/[email protected]
 
       - name: Enable caching
-        uses: Swatinem/rust-cache@v1.3.0
+        uses: Swatinem/rust-cache@v2
 
       - name: Compile
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --all --all-targets --examples --no-run
+        run: cargo test --all --all-targets --examples --no-run
 
       - name: Run tests
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --all --all-targets --examples
+        run: cargo test --all --all-targets --examples
 
   cargo-test-msrv:
-    name: Tests (1.41.0)
+    name: Tests (1.80.0)
     runs-on: ubuntu-latest
     steps:
 
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install arbitrary nightly toolchain
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: nightly-2022-01-01
-          profile: minimal
+          toolchain: nightly-2025-01-01
 
       - name: Install msrv toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: 1.41.0
-          profile: minimal
-          override: true
+        uses: dtolnay/[email protected]
 
       - name: Generate minimal-versions lockfile
-        uses: actions-rs/cargo@v1
-        with:
-          command: +nightly-2022-01-01
-          args: -Z minimal-versions generate-lockfile
+        run: cargo +nightly-2025-01-01 -Zminimal-versions generate-lockfile
 
       - name: Enable caching
-        uses: Swatinem/rust-cache@v1.3.0
+        uses: Swatinem/rust-cache@v2
 
       - name: Compile
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --locked --all --all-targets --examples --no-run
+        run: cargo test --locked --all --all-targets --examples --no-run
 
       - name: Run tests
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --locked --all --all-targets --examples
+        run: cargo test --locked --all --all-targets --examples
 
   cargo-fmt:
     name: Formatting
     runs-on: ubuntu-latest
     steps:
 
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
-      - name: Instal toolchain
-        uses: actions-rs/toolchain@v1
+      - name: Install toolchain
+        uses: dtolnay/rust-toolchain@1.84
         with:
-          profile: minimal
-          toolchain: 1.59.0
-          override: true
           components: rustfmt
 
       - name: Check formatting
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
+        run: cargo fmt --all -- --check
 
   cargo-clippy:
     name: Lints
@@ -118,47 +80,32 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
-      - name: Install beta toolchain
-        uses: actions-rs/toolchain@v1
+      - name: Install toolchain
+        uses: dtolnay/rust-toolchain@1.84
         with:
-          profile: minimal
-          toolchain: 1.59.0
-          override: true
           components: clippy
 
-      - name: Check style
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-          args: --all --all-targets
+      - name: Check clippy
+        run: cargo clippy --all --all-targets
 
   cargo-miri:
     name: Miri
     runs-on: ubuntu-latest
     steps:
 
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install nightly toolchain
-        uses: actions-rs/toolchain@v1
+        uses: dtolnay/rust-toolchain@nightly
         with:
-          profile: minimal
-          toolchain: nightly
-          override: true
           components: miri
 
       - name: Enable caching
-        uses: Swatinem/rust-cache@v1.3.0
+        uses: Swatinem/rust-cache@v2
 
       - name: Miri setup
-        uses: actions-rs/cargo@v1
-        with:
-          command: miri
-          args: setup
+        run: cargo miri setup
 
       - name: Miri test
-        uses: actions-rs/cargo@v1
-        with:
-          command: miri
-          args: test --workspace --all-features
+        run: cargo miri test --workspace --all-features

Cargo.toml

@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
     "crates/erasable",
     "crates/ptr-union",

crates/erasable/Cargo.toml

@@ -1,14 +1,14 @@
 [package]
 name = "erasable"
-version = "1.2.1"
-edition = "2018"
+version = "1.3.0"
+edition = "2021"
+rust-version = "1.80"
 
-authors = ["Christopher Durham (cad97) <[email protected]>"]
 description = "Type-erased thin pointers."
 repository = "https://github.com/CAD97/pointer-utils/tree/master/crates/erasable"
 readme = "README.md"
-keywords = ["thin","pointer","type","erasure"]
-categories = ["data-structures","no-std","rust-patterns"]
+keywords = ["thin", "pointer", "type", "erasure"]
+categories = ["data-structures", "no-std", "rust-patterns"]
 license = "MIT OR Apache-2.0"
 
 [package.metadata.workspaces]

crates/erasable/build.rs

@@ -1,11 +1,11 @@
 use std::env;
 
 fn main() {
+    println!("cargo:rustc-check-cfg=cfg(has_extern_type, has_never, enforce_1_1_0_semantics)");
+
     let cfg = autocfg::new();
 
     cfg.emit_expression_cfg("{ extern { type T; } () }", "has_extern_type");
-    // NB: Requires this impl to cover `T: ?Sized`, which is not the case as of 2020-09-01.
-    // cfg.emit_type_cfg("std::sync::Weak::into_raw", "has_Weak__into_raw");
     cfg.emit_type_cfg("!", "has_never");
 
     if let Ok(var) = env::var("ERASABLE_ENFORCE_1_1_0_SEMANTICS") {

crates/erasable/src/lib.rs

@@ -720,13 +720,11 @@ macro_rules! impl_erasable {
 }
 
 #[cfg(feature = "alloc")]
-impl_erasable!(for<T>
-    Box<T>,
+impl_erasable!(
+    for<T> Box<T>,
     sync::Arc<T>,
-    #[cfg(has_Weak__into_raw)]
     sync::Weak<T>,
     rc::Rc<T>,
-    #[cfg(has_Weak__into_raw)]
     rc::Weak<T>,
 );
 
@@ -749,11 +747,13 @@ unsafe impl ErasablePtr for ! {
 }
 
 #[inline(always)]
+#[allow(clippy::needless_lifetimes)]
 unsafe fn erase_lt<'a, 'b, T: ?Sized>(this: &'a T) -> &'b T {
     &*(this as *const T)
 }
 
 #[inline(always)]
+#[allow(clippy::needless_lifetimes)]
 unsafe fn erase_lt_mut<'a, 'b, T: ?Sized>(this: &'a mut T) -> &'b mut T {
     &mut *(this as *mut T)
 }

crates/erasable/tests/smoke.rs

@@ -1,7 +1,7 @@
 //! These tests don't really assert anything, they just exercise the API.
 //! This is primarily intended to be run under miri as a sanitizer.
 
-#![allow(unused, clippy::redundant_clone, clippy::unnecessary_operation)]
+#![allow(unused, clippy::style)]
 
 use erasable::{Erasable, ErasablePtr, ErasedPtr, Thin};
 

crates/ptr-union/Cargo.toml

@@ -1,14 +1,13 @@
 [package]
 name = "ptr-union"
-version = "2.2.2"
-edition = "2018"
+version = "2.3.0"
+edition = "2021"
 
-authors = ["Christopher Durham (cad97) <[email protected]>"]
 description = "Pointer union types the size of a pointer by storing the tag in the alignment bits."
 repository = "https://github.com/CAD97/pointer-utils/tree/master/crates/ptr-union"
 readme = "README.md"
-keywords = ["thin","pointer","union","enum"]
-categories = ["data-structures","no-std","rust-patterns"]
+keywords = ["thin", "pointer", "union", "enum"]
+categories = ["data-structures", "no-std", "rust-patterns"]
 license = "MIT OR Apache-2.0"
 
 [package.metadata.workspaces]

crates/ptr-union/build.rs

@@ -1,5 +1,7 @@
 fn main() {
     let cfg = autocfg::new();
+    println!("cargo::rustc-check-cfg=cfg(has_never, has_strict_provenance)");
     cfg.emit_type_cfg("!", "has_never");
+    cfg.emit_expression_cfg("<*const ()>::addr", "has_strict_provenance");
     autocfg::rerun_path("build.rs");
 }