diff --git a/compiler/rustc_hir/src/lib.rs b/compiler/rustc_hir/src/lib.rs index 946da9265ba09..556ff1cc48e4d 100644 --- a/compiler/rustc_hir/src/lib.rs +++ b/compiler/rustc_hir/src/lib.rs @@ -4,7 +4,7 @@ #![feature(associated_type_defaults)] #![feature(closure_track_caller)] -#![feature(const_btree_new)] +#![feature(const_btree_len)] #![cfg_attr(bootstrap, feature(let_else))] #![feature(once_cell)] #![feature(min_specialization)] diff --git a/library/alloc/src/collections/btree/map.rs b/library/alloc/src/collections/btree/map.rs index cacbd54b6c246..3018d1c9125bf 100644 --- a/library/alloc/src/collections/btree/map.rs +++ b/library/alloc/src/collections/btree/map.rs @@ -580,7 +580,7 @@ impl BTreeMap { /// map.insert(1, "a"); /// ``` #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] + #[rustc_const_stable(feature = "const_btree_new", since = "CURRENT_RUSTC_VERSION")] #[must_use] pub const fn new() -> BTreeMap { BTreeMap { root: None, length: 0, alloc: ManuallyDrop::new(Global), _marker: PhantomData } @@ -2392,7 +2392,7 @@ impl BTreeMap { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] + #[rustc_const_unstable(feature = "const_btree_len", issue = "71835")] pub const fn len(&self) -> usize { self.length } @@ -2413,7 +2413,7 @@ impl BTreeMap { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] + #[rustc_const_unstable(feature = "const_btree_len", issue = "71835")] pub const fn is_empty(&self) -> bool { self.len() == 0 } diff --git a/library/alloc/src/collections/btree/set.rs b/library/alloc/src/collections/btree/set.rs index 2cfc080740921..3caaf521240d2 100644 --- a/library/alloc/src/collections/btree/set.rs +++ b/library/alloc/src/collections/btree/set.rs @@ -343,7 +343,7 @@ impl BTreeSet { /// let mut set: BTreeSet = BTreeSet::new(); /// ``` #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] + #[rustc_const_stable(feature = "const_btree_new", since = "CURRENT_RUSTC_VERSION")] #[must_use] pub const fn new() -> BTreeSet { BTreeSet { map: BTreeMap::new() } @@ -1174,7 +1174,7 @@ impl BTreeSet { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] + #[rustc_const_unstable(feature = "const_btree_len", issue = "71835")] pub const fn len(&self) -> usize { self.map.len() } @@ -1193,7 +1193,7 @@ impl BTreeSet { /// ``` #[must_use] #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] + #[rustc_const_unstable(feature = "const_btree_len", issue = "71835")] pub const fn is_empty(&self) -> bool { self.len() == 0 } diff --git a/library/alloc/src/lib.rs b/library/alloc/src/lib.rs index cadc2f5ad7798..de58f22daae78 100644 --- a/library/alloc/src/lib.rs +++ b/library/alloc/src/lib.rs @@ -99,7 +99,7 @@ #![feature(coerce_unsized)] #![cfg_attr(not(no_global_oom_handling), feature(const_alloc_error))] #![feature(const_box)] -#![cfg_attr(not(no_global_oom_handling), feature(const_btree_new))] +#![cfg_attr(not(no_global_oom_handling), feature(const_btree_len))] #![feature(const_cow_is_borrowed)] #![feature(const_convert)] #![feature(const_size_of_val)] diff --git a/library/alloc/tests/lib.rs b/library/alloc/tests/lib.rs index 490c0d8f76cda..55aced5106c94 100644 --- a/library/alloc/tests/lib.rs +++ b/library/alloc/tests/lib.rs @@ -32,7 +32,7 @@ #![feature(slice_group_by)] #![feature(slice_partition_dedup)] #![feature(string_remove_matches)] -#![feature(const_btree_new)] +#![feature(const_btree_len)] #![feature(const_default_impls)] #![feature(const_trait_impl)] #![feature(const_str_from_utf8)] diff --git a/src/bootstrap/build.rs b/src/bootstrap/build.rs index ab34d5c1e5504..cd1f418028c62 100644 --- a/src/bootstrap/build.rs +++ b/src/bootstrap/build.rs @@ -1,43 +1,7 @@ -use env::consts::{EXE_EXTENSION, EXE_SUFFIX}; use std::env; -use std::ffi::OsString; -use std::path::PathBuf; - -/// Given an executable called `name`, return the filename for the -/// executable for a particular target. -pub fn exe(name: &PathBuf) -> PathBuf { - if EXE_EXTENSION != "" && name.extension() != Some(EXE_EXTENSION.as_ref()) { - let mut name: OsString = name.clone().into(); - name.push(EXE_SUFFIX); - name.into() - } else { - name.clone() - } -} fn main() { let host = env::var("HOST").unwrap(); println!("cargo:rerun-if-changed=build.rs"); - println!("cargo:rerun-if-env-changed=RUSTC"); println!("cargo:rustc-env=BUILD_TRIPLE={}", host); - - // This may not be a canonicalized path. - let mut rustc = PathBuf::from(env::var_os("RUSTC").unwrap()); - - if rustc.is_relative() { - println!("cargo:rerun-if-env-changed=PATH"); - for dir in env::split_paths(&env::var_os("PATH").unwrap_or_default()) { - let absolute = dir.join(&exe(&rustc)); - if absolute.exists() { - rustc = absolute; - break; - } - } - } - assert!(rustc.is_absolute()); - - // FIXME: if the path is not utf-8, this is going to break. Unfortunately - // Cargo doesn't have a way for us to specify non-utf-8 paths easily, so - // we'll need to invent some encoding scheme if this becomes a problem. - println!("cargo:rustc-env=RUSTC={}", rustc.to_str().unwrap()); } diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs index c33b7fc7cd6ee..415774d7255d7 100644 --- a/src/bootstrap/builder.rs +++ b/src/bootstrap/builder.rs @@ -1557,13 +1557,12 @@ impl<'a> Builder<'a> { match mode { Mode::ToolBootstrap => { // Restrict the allowed features to those passed by rustbuild, so we don't depend on nightly accidentally. - // HACK: because anyhow does feature detection in build.rs, we need to allow the backtrace feature too. - rustflags.arg("-Zallow-features=binary-dep-depinfo,backtrace"); + rustflags.arg("-Zallow-features=binary-dep-depinfo"); } Mode::ToolStd => { // Right now this is just compiletest and a few other tools that build on stable. // Allow them to use `feature(test)`, but nothing else. - rustflags.arg("-Zallow-features=binary-dep-depinfo,test,backtrace,proc_macro_internals,proc_macro_diagnostic,proc_macro_span"); + rustflags.arg("-Zallow-features=binary-dep-depinfo,test,proc_macro_internals,proc_macro_diagnostic,proc_macro_span"); } Mode::Std | Mode::Rustc | Mode::Codegen | Mode::ToolRustc => {} } diff --git a/src/test/ui/consts/issue-88071.rs b/src/test/ui/consts/issue-88071.rs index 1c38c43e6c0c5..f58cdb5945e53 100644 --- a/src/test/ui/consts/issue-88071.rs +++ b/src/test/ui/consts/issue-88071.rs @@ -2,8 +2,6 @@ // // regression test for #88071 -#![feature(const_btree_new)] - use std::collections::BTreeMap; pub struct CustomMap(BTreeMap); diff --git a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs index 405f022868395..f7ce719177268 100644 --- a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs +++ b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs @@ -367,10 +367,21 @@ fn is_const_fn(tcx: TyCtxt<'_>, def_id: DefId, msrv: Option) -> bo // Checking MSRV is manually necessary because `rustc` has no such concept. This entire // function could be removed if `rustc` provided a MSRV-aware version of `is_const_fn`. // as a part of an unimplemented MSRV check https://github.com/rust-lang/rust/issues/65262. + + // HACK(nilstrieb): CURRENT_RUSTC_VERSION can return versions like 1.66.0-dev. `rustc-semver` doesn't accept + // the `-dev` version number so we have to strip it off. + let short_version = since + .as_str() + .split('-') + .next() + .expect("rustc_attr::StabilityLevel::Stable::since` is empty"); + + let since = rustc_span::Symbol::intern(short_version); + crate::meets_msrv( msrv, RustcVersion::parse(since.as_str()) - .expect("`rustc_attr::StabilityLevel::Stable::since` is ill-formatted"), + .unwrap_or_else(|err| panic!("`rustc_attr::StabilityLevel::Stable::since` is ill-formatted: `{since}`, {err:?}")), ) } else { // Unstable const fn with the feature enabled. diff --git a/src/tools/clippy/tests/ui/crashes/ice-7126.rs b/src/tools/clippy/tests/ui/crashes/ice-7126.rs index ca563ba097851..b2dc2248b5562 100644 --- a/src/tools/clippy/tests/ui/crashes/ice-7126.rs +++ b/src/tools/clippy/tests/ui/crashes/ice-7126.rs @@ -1,13 +1,13 @@ // This test requires a feature gated const fn and will stop working in the future. -#![feature(const_btree_new)] +#![feature(const_btree_len)] use std::collections::BTreeMap; -struct Foo(BTreeMap); +struct Foo(usize); impl Foo { fn new() -> Self { - Self(BTreeMap::new()) + Self(BTreeMap::len(&BTreeMap::::new())) } }