Rollup merge of #70395 - ehuss:update-cargo, r=ehuss
Update cargo.
8 commits in 7019b3ed3d539db7429d10a343b69be8c426b576..8a0d4d9c9abc74fd670353094387d62028b40ae9
2020-03-17 21:02:00 +0000 to 2020-03-24 17:57:04 +0000
- Re-implement proc-macro feature decoupling. (rust-lang/cargo#8028)
- Remove unused transitive dependencies: miniz_oxide, adler32 (rust-lang/cargo#8023)
- Fix bug with -Zfeatures=dev_dep and `check --profile=test`. (rust-lang/cargo#8027)
- Remove Config from CompileOptions. (rust-lang/cargo#8021)
- Add `rustless.org` to documented blocklist. (rust-lang/cargo#7922)
- Print colored warnings when build script panics (rust-lang/cargo#8017)
- Do not supply --crate-version flag to rustdoc if present in RUSTDOCFLAGS (rust-lang/cargo#8014)
- Add proc-macro to index, and new feature resolver. (rust-lang/cargo#8003)
bors [Wed, 25 Mar 2020 22:56:53 +0000 (22:56 +0000)]
Auto merge of #70412 - Dylan-DPC:rollup-yuq2mfy, r=Dylan-DPC
Rollup of 5 pull requests
Successful merges:
- #69700 (Rename LayoutDetails to just Layout.)
- #70392 (Make x.py compatible with python 3.8.)
- #70406 (Clean up E0458 explanation)
- #70407 (Avoid tagging as I-nominated on toolstate breakage)
- #70409 (gitignore: allow target to be a symlink)
bors [Wed, 25 Mar 2020 19:42:22 +0000 (19:42 +0000)]
Auto merge of #70404 - Dylan-DPC:rollup-iikcm6r, r=Dylan-DPC
Rollup of 5 pull requests
Successful merges:
- #70226 (use checked casts and arithmetic in Miri engine)
- #70319 (correctly normalize constants)
- #70352 (Add long error explanation for E0710 )
- #70366 (Implement Fuse with Option)
- #70379 (fix incorrect type name in doc comments)
Dylan DPC [Wed, 25 Mar 2020 18:28:12 +0000 (19:28 +0100)]
Rollup merge of #70366 - cuviper:option-fuse, r=dtolnay
Implement Fuse with Option
The former `done` flag was roughly similar to an `Option` tag, but left
the possibity of misuse. By using a real `Option`, we can set `None`
when the iterator is exhausted, removing any way to call it again. We
also allow niche layout this way, so the `Fuse` may be smaller.
The `FusedIterator` specialization does want to ignore the possibility
of exhaustion though, so it uses `unsafe { intrinsics::unreachable() }`
to optimize that branch away. The entire `Fuse` implementation is now
isolated in its own module to contain that unsafety.
Dylan DPC [Wed, 25 Mar 2020 18:28:08 +0000 (19:28 +0100)]
Rollup merge of #70226 - RalfJung:checked, r=oli-obk
use checked casts and arithmetic in Miri engine
This is unfortunately pretty annoying because we have to cast back and forth between `u64` and `usize` more often that should be necessary, and that cast is considered fallible.
For example, should [this](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/mir/interpret/value/enum.ConstValue.html) really be `usize`?
Also, `LayoutDetails` uses `usize` for field indices, but in Miri we use `u64` to be able to also handle array indexing. Maybe methods like `mplace_field` should be suitably generalized to accept both `u64` and `usize`?
bors [Wed, 25 Mar 2020 05:46:43 +0000 (05:46 +0000)]
Auto merge of #70383 - Centril:rollup-hmfft3y, r=Centril
Rollup of 7 pull requests
Successful merges:
- #70331 (Increase verbosity when using update syntax with private fields)
- #70349 (move `hir_id_validation` to `rustc_passes` + simplify `hir::map` code)
- #70361 (Update backtrace crate to 0.3.46)
- #70364 (resolve: Remove `rustc_attrs` as a standalone feature gate)
- #70369 (Fix smaller issues with invalid placeholder type errors)
- #70373 (normalize some imports & prefer direct ones)
- #70376 (Add test for #66312)
Rollup merge of #70361 - tmiasko:backtrace, r=Mark-Simulacrum
Update backtrace crate to 0.3.46
* Support line-tables-only when using libbacktrace
* Update libbacktrace to latest master
* Define HAVE_KERN_PROC on FreeBSD to fix rust-lang/rust#54434
Rollup merge of #70368 - bjorn3:patch-2, r=jonas-schievink
Mark hotplug_codegen_backend as ignore-stage1
Suggested by @eddyb in https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/do.20we.20really.20need.20stage2.2E.2E.3F/near/191659846.
Rollup merge of #70350 - workingjubilee:patch-1, r=Dylan-DPC
Request "-Z unstable-options" for unstable options
Explicitly requests the "-Z unstable-options" flag if someone attempts to use
a cargo option gated by it. This enhances discoverability, particularly in the
instance where the user is on the nightly compiler but isn't using the flag.
This relates to, but does not end with or resolve, issue #65770.
Rollup merge of #70234 - anp:tracked-std-traits, r=Amanieu
#[track_caller] on core::ops::{Index, IndexMut}.
Applies the attribute to `core::ops::Index(Mut)` and enough std internals to cover the [functions listed in "tier 1" in the original RFC](https://github.com/rust-lang/rfcs/blob/master/text/2091-inline-semantic.md#survey-of-panicking-standard-functions).
Split out from #69251 to allow separate assessment of perf impact.
To my knowledge, this is the last piece of implementing RFC 2091.
Josh Stone [Sun, 22 Mar 2020 23:03:34 +0000 (16:03 -0700)]
Implement Fuse with Option
The former `done` flag was roughly similar to an `Option` tag, but left
the possibity of misuse. By using a real `Option`, we can set `None`
when the iterator is exhausted, removing any way to call it again. We
also allow niche layout this way, so the `Fuse` may be smaller.
The `FusedIterator` specialization does want to ignore the possibility
of exhaustion though, so it uses `unsafe { intrinsics::unreachable() }`
to optimize that branch away. The entire `Fuse` implementation is now
isolated in its own module to contain that unsafety.
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