Bump MSRV to 1.63 (#8)

This makes it so `AsFd` implementations are enabled unconditionally.
Removes the build script.

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
         run: cargo check -Z features=dev_dep
       - run: cargo test
       - name: Force tests with pipe implementation
-        if : startsWith(matrix.os, 'ubuntu-latest')
+        if: startsWith(matrix.os, 'ubuntu-latest')
         run: cargo test
         env:
           RUSTFLAGS: --cfg async_signal_force_pipe_impl
@@ -42,7 +42,7 @@ jobs:
         os: [ubuntu-latest, windows-latest]
         # When updating this, the reminder to update the minimum supported
         # Rust version in Cargo.toml and .clippy.toml.
-        rust: ['1.48']
+        rust: ['1.63']
     steps:
       - uses: actions/checkout@v3
       - name: Install Rust

Cargo.toml

@@ -3,7 +3,7 @@ name = "async-signal"
 version = "0.2.0"
 edition = "2018"
 authors = ["John Nunley <[email protected]>"]
-rust-version = "1.48"
+rust-version = "1.63"
 description = "Async signal handling"
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/smol-rs/async-signal"
@@ -34,6 +34,3 @@ concurrent-queue = "2.2.0"
 async-io = "1.12.0"
 futures-lite = "1.12.0"
 signal-hook = "0.3.14"
-
-[build-dependencies]
-autocfg = "1.1.0"

examples/print.rs

@@ -8,7 +8,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     async_io::block_on(async {
         // Register the signals we want to receive.
         #[cfg(unix)]
-        let signals = Signals::new(&[
+        let signals = Signals::new([
             Signal::Term,
             Signal::Quit,
             Signal::Int,
@@ -20,7 +20,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         ])?;
 
         #[cfg(windows)]
-        let signals = Signals::new(&[Signal::Int])?;
+        let signals = Signals::new([Signal::Int])?;
 
         // Loop over the signals.
         signals

src/lib.rs

@@ -94,10 +94,7 @@ use std::pin::Pin;
 use std::task::{Context, Poll};
 
 #[cfg(unix)]
-use std::os::unix::io::{AsRawFd, RawFd};
-
-#[cfg(all(unix, not(async_signal_no_io_safety)))]
-use std::os::unix::io::{AsFd, BorrowedFd};
+use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd};
 
 #[cfg(windows)]
 mod libc {
@@ -380,7 +377,7 @@ impl AsRawFd for Signals {
     }
 }
 
-#[cfg(all(unix, not(async_signal_no_io_safety)))]
+#[cfg(unix)]
 impl AsFd for Signals {
     fn as_fd(&self) -> BorrowedFd<'_> {
         self.notifier.as_fd()

src/pipe.rs

@@ -7,14 +7,11 @@ use futures_io::AsyncRead;
 
 use std::io::{self, prelude::*};
 use std::mem;
-use std::os::unix::io::{AsRawFd, RawFd};
+use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd};
 use std::os::unix::net::UnixStream;
 use std::pin::Pin;
 use std::task::{Context, Poll};
 
-#[cfg(not(async_signal_no_io_safety))]
-use std::os::unix::io::{AsFd, BorrowedFd};
-
 const BUFFER_LEN: usize = mem::size_of::<libc::c_int>();
 
 /// The notifier that uses an asynchronous pipe.
@@ -101,7 +98,6 @@ impl AsRawFd for Notifier {
     }
 }
 
-#[cfg(not(async_signal_no_io_safety))]
 impl AsFd for Notifier {
     fn as_fd(&self) -> BorrowedFd<'_> {
         self.read.as_fd()

src/signalfd.rs

@@ -18,13 +18,10 @@ use concurrent_queue::ConcurrentQueue;
 use std::fmt;
 use std::io;
 use std::mem;
-use std::os::unix::io::{AsRawFd, RawFd};
+use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd};
 use std::sync::Arc;
 use std::task::{Context, Poll};
 
-#[cfg(not(async_signal_no_io_safety))]
-use std::os::unix::io::{AsFd, BorrowedFd};
-
 const MAX_SIGNALS: usize = 16;
 
 /// The notifier that uses Linux's signalfd API.
@@ -140,7 +137,6 @@ impl AsRawFd for Notifier {
     }
 }
 
-#[cfg(not(async_signal_no_io_safety))]
 impl AsFd for Notifier {
     fn as_fd(&self) -> BorrowedFd<'_> {
         self.fd.as_fd()
@@ -197,7 +193,6 @@ impl AsRawFd for Signalfd {
     }
 }
 
-#[cfg(not(async_signal_no_io_safety))]
 impl AsFd for Signalfd {
     fn as_fd(&self) -> BorrowedFd<'_> {
         unsafe { BorrowedFd::borrow_raw(self.0) }