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The use-case of `todo!()` macro is to be a much easier to type
alternative to `unimplemented!()` macro.
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Stabilize Range*::contains.
Closes https://github.com/rust-lang/rust/issues/32311. There's also a bit of rustfmt on range.rs thrown in for good measure (I forgot to turn off format-on-save in VSCode).
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Add clamp for ranges. Implements #44095
Ready for merge
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Update book submodule
Updates the book to the latest commit
This is to include [documentation SEO fix](https://github.com/rust-lang/book/pull/1788) ASAP.
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Add vectored read and write support
This functionality has lived for a while in the tokio ecosystem, where
it can improve performance by minimizing copies.
r? @alexcrichton
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Stabilize TryFrom and TryInto with a convert::Infallible empty enum
This is the plan proposed in https://github.com/rust-lang/rust/issues/33417#issuecomment-423073898
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This helps to avoid merge conflicts when concurrent PRs append
features to the end of the list.
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Instant::checked_duration_since
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This functionality has lived for a while in the tokio ecosystem, where
it can improve performance by minimizing copies.
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Update the future/task API
This change updates the future and task API as discussed in the stabilization RFC at https://github.com/rust-lang/rfcs/pull/2592.
Changes:
- Replacing UnsafeWake with RawWaker and RawWakerVtable
- Removal of LocalWaker
- Removal of Arc-based Wake trait
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SGX target: simplify usercall internals
This moves logic from assembly to Rust and removes the special case for exit/panic handling, merging it with regular usercall handling.
Also, this fixes a bug in the exit usercall introduced in a75ae00. The bug would make regular exits look like panics with high probability. It would also with some probability leak information through uncleared registers.
cc @VardhanThigle
r? @alexcrichton
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This moves logic from assembly to Rust and removes the special
case for exit/panic handling, merging it with regular usercall
handling.
Also, this fixes a bug in the exit usercall introduced in a75ae00.
The bug would make regular exits look like panics with high
probability. It would also with some probability leak information
through uncleared registers.
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This change updates the future and task API as discussed in the stabilization RFC at https://github.com/rust-lang/rfcs/pull/2592.
Changes:
- Replacing UnsafeWake with RawWaker and RawWakerVtable
- Removal of LocalWaker
- Removal of Arc-based Wake trait
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Update std/lib.rs docs to reflect Rust 2018 usage
Fixes #56544
This paragraph was written for Rust 2015. Since 2018 has been stable for a while I think we can update it.
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VardhanThigle:Vardhan/x86_64-fortanix-unknown-sgx-backtrace-support, r=alexcrichton
Supporting backtrace for x86_64-fortanix-unknown-sgx.
# Overview
Implementing following functions required by `libstd/sys_common` to support `backtrace`:
```
1. unwind_backtrace
2. trace_fn
3. resolve_symname
```
# Description:
The changes here are quite similar to the Cloudabi target `src/libstd/sys/cloudabi/backtrace.rs`
The first 2 functions are implemented via calls to libunwind.a that is linked to the `x86_64-fortanix-unknown-sgx` (#56979), we have not implemented functionality needed by `resolve_symname` (or `dladdr`) to reduce SGX TCB. Rather, we print the function address (relative to enclave image base) in `resolve_symname` which can be later translated to correct symbol name (say, via `addr2line`).
# Note:
For `x86_64-fortanix-unknown-sgx`, the `RUST_BACKTRACE` environment has to be set from within the program running in an enclave.
cc: @jethrogb
r? @alexcrichton
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Const-stabilize `const_int_ops` + `const_ip`
r? @oli-obk
## Note for relnotes: This PR includes https://github.com/rust-lang/rust/pull/57105.
I've added T-lang since this affects intrinsics and the operational semantics of Rust's `const fn` fragment.
## Stable APIs proposed for constification
+ `const_int_ops`:
+ `count_ones`
+ `count_zeros`
+ `leading_zeros`
+ `trailing_zeros`
+ `swap_bytes`
+ `from_be`
+ `from_le`
+ `to_be`
+ `to_le`
+ `const_ip`
+ `Ipv4Addr::new`
## Unstable APIs constified
+ `const_int_conversion`:
+ `reverse_bits`
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Add duration constants
Add constants `SECOND`, `MILLISECOND`, `MICROSECOND`, and `NANOSECOND` to `core::time`.
This will make working with durations more ergonomic. Compare:
```rust
// Convenient, but deprecated function.
thread::sleep_ms(2000);
// The current canonical way to sleep for two seconds.
thread::sleep(Duration::from_secs(2));
// Sleeping using one of the new constants.
thread::sleep(2 * SECOND);
```
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Signed-off-by: Yu Ding <dingelish@gmail.com>
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Signed-off-by: Yu Ding <dingelish@gmail.com>
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Add `io` and `arch` modules to `std::os::fortanix_sgx`
This PR adds two more (unstable) modules to `std::os::fortanix_sgx` for the `x86_64-fortanix-unknown-sgx` target.
### io
`io` allows conversion between raw file descriptors and Rust types, similar to `std::os::unix::io`.
### arch
`arch` exposes the `ENCLU[EREPORT]` and `ENCLU[EGETKEY]` instructions. The current functions are very likely not going to be the final form of these functions (see also https://github.com/fortanix/rust-sgx/issues/15), but this should be sufficient to enable experimentation in libraries. I tried using the actual types (from the [`sgx-isa` crate](https://crates.io/crates/sgx-isa)) instead of byte arrays, but that would make `std` dependent on the `bitflags` crate which I didn't want to do at this time.
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This commit switches the standard library to using the `backtrace-sys`
crate from crates.io instead of duplicating the logic here in the Rust
repositor with the `backtrace-sys`'s crate's logic.
Eventually this will hopefully be a good step towards using the
`backtrace` crate directly from crates.io itself, but we're not quite
there yet! Hopefully this is a small incremental first step we can take.
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Add `std::os::fortanix_sgx` module
This PR adds the `std::os::sgx` module to expose platform-specific APIs behind the `sgx_platform` feature gate.
Depends on https://github.com/rust-lang/rust/pull/56972 to be able to meaningfully build `std::os` documentation for non-standard targets.
Tracking issue: https://github.com/rust-lang/rust/issues/56975
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Stabilize min_const_unsafe_fn in 1.33
Fixes #55607
r? @oli-obk
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