Rollup of 15 pull requests

Cargo.lock

@@ -876,24 +876,24 @@ dependencies = [
 
 [[package]]
 name = "curl"
-version = "0.4.34"
+version = "0.4.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e268162af1a5fe89917ae25ba3b0a77c8da752bdc58e7dbb4f15b91fbd33756e"
+checksum = "d0bac9f84ca0977c4d9b8db998689de55b9e976656a6bc87fada2ca710d504c7"
 dependencies = [
  "curl-sys",
  "libc",
  "openssl-probe",
  "openssl-sys",
  "schannel",
- "socket2",
+ "socket2 0.4.0",
  "winapi 0.3.9",
 ]
 
 [[package]]
 name = "curl-sys"
-version = "0.4.39+curl-7.74.0"
+version = "0.4.42+curl-7.76.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07a8ce861e7b68a0b394e814d7ee9f1b2750ff8bd10372c6ad3bacc10e86f874"
+checksum = "4636d8d6109c842707018a104051436bffb8991ea20b2d1293db70b6e0ee4c7c"
 dependencies = [
  "cc",
  "libc",
@@ -2285,7 +2285,7 @@ version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a33c1b55807fbed163481b5ba66db4b2fa6cde694a5027be10fb724206c5897"
 dependencies = [
- "socket2",
+ "socket2 0.3.16",
  "winapi 0.3.9",
 ]
 
@@ -2402,15 +2402,15 @@ dependencies = [
 
 [[package]]
 name = "openssl"
-version = "0.10.30"
+version = "0.10.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d575eff3665419f9b83678ff2815858ad9d11567e082f5ac1814baba4e2bcb4"
+checksum = "a61075b62a23fef5a29815de7536d940aa35ce96d18ce0cc5076272db678a577"
 dependencies = [
  "bitflags",
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "foreign-types",
- "lazy_static",
  "libc",
+ "once_cell",
  "openssl-sys",
 ]
 
@@ -2422,18 +2422,18 @@ checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 
 [[package]]
 name = "openssl-src"
-version = "111.12.0+1.1.1h"
+version = "111.15.0+1.1.1k"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "858a4132194f8570a7ee9eb8629e85b23cbc4565f2d4a162e87556e5956abf61"
+checksum = "b1a5f6ae2ac04393b217ea9f700cd04fa9bf3d93fae2872069f3d15d908af70a"
 dependencies = [
  "cc",
 ]
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.58"
+version = "0.9.61"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a842db4709b604f0fe5d1170ae3565899be2ad3d9cbc72dedc789ac0511f78de"
+checksum = "313752393519e876837e09e1fa183ddef0be7735868dced3196f4472d536277f"
 dependencies = [
  "autocfg",
  "cc",
@@ -4943,6 +4943,16 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "socket2"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e3dfc207c526015c632472a77be09cf1b6e46866581aecae5cc38fb4235dea2"
+dependencies = [
+ "libc",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.2.0"

RELEASES.md

@@ -1,3 +1,151 @@
+Version 1.52.0 (2021-05-06)
+============================
+
+Language
+--------
+- [Added the `unsafe_op_in_unsafe_fn` lint, which checks whether the unsafe code
+  in an `unsafe fn` is wrapped in a `unsafe` block.][79208] This lint
+  is allowed by default, and may become a warning or hard error in a
+  future edition.
+- [You can now cast mutable references to arrays to a pointer of the same type as
+  the element.][81479]
+
+Compiler
+--------
+- [Upgraded the default LLVM to LLVM 12.][81451]
+
+Added tier 3\* support for the following targets.
+
+- [`s390x-unknown-linux-musl`][82166]
+- [`riscv32gc-unknown-linux-musl` & `riscv64gc-unknown-linux-musl`][82202]
+- [`powerpc-unknown-openbsd`][82733]
+
+\* Refer to Rust's [platform support page][platform-support-doc] for more
+information on Rust's tiered platform support.
+
+Libraries
+---------
+- [`OsString` now implements `Extend` and `FromIterator`.][82121]
+- [`cmp::Reverse` now has `#[repr(transparent)]` representation.][81879]
+- [`Arc<impl Error>` now implements `error::Error`.][80553]
+- [All integer division and remainder operations are now `const`.][80962]
+
+Stabilised APIs
+-------------
+- [`Arguments::as_str`]
+- [`char::MAX`]
+- [`char::REPLACEMENT_CHARACTER`]
+- [`char::UNICODE_VERSION`]
+- [`char::decode_utf16`]
+- [`char::from_digit`]
+- [`char::from_u32_unchecked`]
+- [`char::from_u32`]
+- [`slice::partition_point`]
+- [`str::rsplit_once`]
+- [`str::split_once`]
+
+The following previously stable APIs are now `const`.
+
+- [`char::len_utf8`]
+- [`char::len_utf16`]
+- [`char::to_ascii_uppercase`]
+- [`char::to_ascii_lowercase`]
+- [`char::eq_ignore_ascii_case`]
+- [`u8::to_ascii_uppercase`]
+- [`u8::to_ascii_lowercase`]
+- [`u8::eq_ignore_ascii_case`]
+
+Rustdoc
+-------
+- [Rustdoc lints are now treated as a tool lint, meaning that
+  lints are now prefixed with `rustdoc::` (e.g. `#[warn(rustdoc::non_autolinks)]`).][80527]
+  Using the old style is still allowed, and will become a warning in
+  a future release.
+- [Rustdoc now supports argument files.][82261]
+- [Rustdoc now generates smart punctuation for documentation.][79423]
+- [You can now use "task lists" in Rustdoc Markdown.][81766] E.g.
+  ```markdown
+  - [x] Complete
+  - [ ] Todo
+  ```
+
+Misc
+----
+- [You can now pass multiple filters to tests.][81356] E.g.
+  `cargo test -- foo bar` will run all tests that match `foo` and `bar`.
+- [Rustup now distributes PDB symbols for the `std` library on Windows,
+  allowing you to see `std` symbols when debugging.][82218]
+
+Internal Only
+-------------
+These changes provide no direct user facing benefits, but represent significant
+improvements to the internals and overall performance of rustc and
+related tools.
+
+- [Check the result cache before the DepGraph when ensuring queries][81855]
+- [Try fast_reject::simplify_type in coherence before doing full check][81744]
+- [Only store a LocalDefId in some HIR nodes][81611]
+- [Store HIR attributes in a side table][79519]
+
+Compatibility Notes
+-------------------
+- [Cargo build scripts are now forbidden from setting `RUSTC_BOOTSTRAP`.][cargo/9181]
+- [Removed support for the `x86_64-rumprun-netbsd` target.][82594]
+- [Deprecated the `x86_64-sun-solaris` target in favor of `x86_64-pc-solaris`.][82216]
+- [Rustdoc now only accepts `,`, ` `, and `\t` as delimiters for specifying
+  languages in code blocks.][78429]
+- [Rustc now catches more cases of `pub_use_of_private_extern_crate`][80763]
+- [Changes in how proc macros handle whitespace may lead to panics when used
+  with older `proc-macro-hack` versions. A `cargo update` should be sufficient to fix this in all cases.][84136]
+
+[84136]: https://github.com/rust-lang/rust/issues/84136
+[80763]: https://github.com/rust-lang/rust/pull/80763
+[82166]: https://github.com/rust-lang/rust/pull/82166
+[82121]: https://github.com/rust-lang/rust/pull/82121
+[81879]: https://github.com/rust-lang/rust/pull/81879
+[82261]: https://github.com/rust-lang/rust/pull/82261
+[82218]: https://github.com/rust-lang/rust/pull/82218
+[82216]: https://github.com/rust-lang/rust/pull/82216
+[82202]: https://github.com/rust-lang/rust/pull/82202
+[81855]: https://github.com/rust-lang/rust/pull/81855
+[81766]: https://github.com/rust-lang/rust/pull/81766
+[81744]: https://github.com/rust-lang/rust/pull/81744
+[81611]: https://github.com/rust-lang/rust/pull/81611
+[81479]: https://github.com/rust-lang/rust/pull/81479
+[81451]: https://github.com/rust-lang/rust/pull/81451
+[81356]: https://github.com/rust-lang/rust/pull/81356
+[80962]: https://github.com/rust-lang/rust/pull/80962
+[80553]: https://github.com/rust-lang/rust/pull/80553
+[80527]: https://github.com/rust-lang/rust/pull/80527
+[79519]: https://github.com/rust-lang/rust/pull/79519
+[79423]: https://github.com/rust-lang/rust/pull/79423
+[79208]: https://github.com/rust-lang/rust/pull/79208
+[78429]: https://github.com/rust-lang/rust/pull/78429
+[82733]: https://github.com/rust-lang/rust/pull/82733
+[82594]: https://github.com/rust-lang/rust/pull/82594
+[cargo/9181]: https://github.com/rust-lang/cargo/pull/9181
+[`char::MAX`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.MAX
+[`char::REPLACEMENT_CHARACTER`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.REPLACEMENT_CHARACTER
+[`char::UNICODE_VERSION`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.UNICODE_VERSION
+[`char::decode_utf16`]: https://doc.rust-lang.org/std/primitive.char.html#method.decode_utf16
+[`char::from_u32`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_u32
+[`char::from_u32_unchecked`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_u32_unchecked
+[`char::from_digit`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_digit
+[`Peekable::next_if`]: https://doc.rust-lang.org/stable/std/iter/struct.Peekable.html#method.next_if
+[`Peekable::next_if_eq`]: https://doc.rust-lang.org/stable/std/iter/struct.Peekable.html#method.next_if_eq
+[`Arguments::as_str`]: https://doc.rust-lang.org/stable/std/fmt/struct.Arguments.html#method.as_str
+[`str::split_once`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_once
+[`str::rsplit_once`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.rsplit_once
+[`slice::partition_point`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.partition_point
+[`char::len_utf8`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.len_utf8
+[`char::len_utf16`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.len_utf16
+[`char::to_ascii_uppercase`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_ascii_uppercase
+[`char::to_ascii_lowercase`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_ascii_lowercase
+[`char::eq_ignore_ascii_case`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.eq_ignore_ascii_case
+[`u8::to_ascii_uppercase`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_ascii_uppercase
+[`u8::to_ascii_lowercase`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_ascii_lowercase
+[`u8::eq_ignore_ascii_case`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.eq_ignore_ascii_case
+
 Version 1.51.0 (2021-03-25)
 ============================
 

compiler/rustc_codegen_ssa/src/back/linker.rs

@@ -432,8 +432,6 @@ impl<'a> Linker for GccLinker<'a> {
         // insert it here.
         if self.sess.target.is_like_osx {
             self.linker_arg("-dead_strip");
-        } else if self.sess.target.is_like_solaris {
-            self.linker_arg("-zignore");
 
         // If we're building a dylib, we don't use --gc-sections because LLVM
         // has already done the best it can do, and we also don't want to
@@ -655,6 +653,10 @@ impl<'a> Linker for GccLinker<'a> {
     fn add_as_needed(&mut self) {
         if self.sess.target.linker_is_gnu {
             self.linker_arg("--as-needed");
+        } else if self.sess.target.is_like_solaris {
+            // -z ignore is the Solaris equivalent to the GNU ld --as-needed option
+            self.linker_arg("-z");
+            self.linker_arg("ignore");
         }
     }
 }

compiler/rustc_mir/src/transform/const_goto.rs

@@ -47,7 +47,7 @@ impl<'tcx> MirPass<'tcx> for ConstGoto {
         // if we applied optimizations, we potentially have some cfg to cleanup to
         // make it easier for further passes
         if should_simplify {
-            simplify_cfg(body);
+            simplify_cfg(tcx, body);
             simplify_locals(body, tcx);
         }
     }

compiler/rustc_mir/src/transform/deduplicate_blocks.rs

@@ -26,7 +26,7 @@ impl<'tcx> MirPass<'tcx> for DeduplicateBlocks {
         if has_opts_to_apply {
             let mut opt_applier = OptApplier { tcx, duplicates };
             opt_applier.visit_body(body);
-            simplify_cfg(body);
+            simplify_cfg(tcx, body);
         }
     }
 }

compiler/rustc_mir/src/transform/early_otherwise_branch.rs

@@ -164,7 +164,7 @@ impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch {
         // Since this optimization adds new basic blocks and invalidates others,
         // clean up the cfg to make it nicer for other passes
         if should_cleanup {
-            simplify_cfg(body);
+            simplify_cfg(tcx, body);
         }
     }
 }

compiler/rustc_mir/src/transform/generator.rs

@@ -964,7 +964,7 @@ fn create_generator_drop_shim<'tcx>(
 
     // Make sure we remove dead blocks to remove
     // unrelated code from the resume part of the function
-    simplify::remove_dead_blocks(&mut body);
+    simplify::remove_dead_blocks(tcx, &mut body);
 
     dump_mir(tcx, None, "generator_drop", &0, &body, |_, _| Ok(()));
 
@@ -1137,7 +1137,7 @@ fn create_generator_resume_function<'tcx>(
 
     // Make sure we remove dead blocks to remove
     // unrelated code from the drop part of the function
-    simplify::remove_dead_blocks(body);
+    simplify::remove_dead_blocks(tcx, body);
 
     dump_mir(tcx, None, "generator_resume", &0, body, |_, _| Ok(()));
 }

compiler/rustc_mir/src/transform/inline.rs

@@ -57,7 +57,7 @@ impl<'tcx> MirPass<'tcx> for Inline {
         if inline(tcx, body) {
             debug!("running simplify cfg on {:?}", body.source);
             CfgSimplifier::new(body).simplify();
-            remove_dead_blocks(body);
+            remove_dead_blocks(tcx, body);
         }
     }
 }

compiler/rustc_mir/src/transform/match_branches.rs

@@ -167,7 +167,7 @@ impl<'tcx> MirPass<'tcx> for MatchBranchSimplification {
         }
 
         if should_cleanup {
-            simplify_cfg(body);
+            simplify_cfg(tcx, body);
         }
     }
 }

compiler/rustc_mir/src/transform/multiple_return_terminators.rs

@@ -38,6 +38,6 @@ impl<'tcx> MirPass<'tcx> for MultipleReturnTerminators {
             }
         }
 
-        simplify::remove_dead_blocks(body)
+        simplify::remove_dead_blocks(tcx, body)
     }
 }

compiler/rustc_mir/src/transform/remove_unneeded_drops.rs

@@ -36,7 +36,7 @@ impl<'tcx> MirPass<'tcx> for RemoveUnneededDrops {
         // if we applied optimizations, we potentially have some cfg to cleanup to
         // make it easier for further passes
         if should_simplify {
-            simplify_cfg(body);
+            simplify_cfg(tcx, body);
         }
     }
 }