This patch adds two methods to `Duration`. The first, `Duration::zero`,
provides a `const` constructor for getting an zero-length duration. This
is also what `Default` provides (this was clarified in the docs), though
`default` is not `const`.
The second, `Duration::is_zero`, returns true if a `Duration` spans no
time (i.e., because its components are all zero). Previously, the way to
do this was either to compare both `as_secs` and `subsec_nanos` to 0, to
compare against `Duration::new(0, 0)`, or to use the `u128` method
`as_nanos`, none of which were particularly elegant.
Deprecate `Vec::remove_item`
In #40062 we decided to remove that method. In #71834 it was said that we want to deprecate it for a few cycles before removing it. That's what this PR does.
Prevent attacker from manipulating FPU tag word used in SGX enclave
Insufficient sanitization of the x87 FPU tag word in the trusted enclave runtime allowed unprivileged adversaries in the containing host application to induce incoherent or unexpected results for ABI-compliant compiled enclave application code that uses the x87 FPU.
Vulnerability was disclosed to us by Fritz Alder, Jo Van Bulck, David Oswald and Frank Piessens
cc: @jethrogb
ci: disable alt build during try builds
The alt build is not actually needed often, and it can be added back on a case-by-case basis if a specific PR needs access to it.
This will free up a builder.
r? @Mark-Simulacrum
RISC-V Emulated Testing
Adds a disabled docker image on which to run RISC-V tests. Based on the armhf image.
Test using
```
./src/ci/docker/run.sh riscv64gc-linux
```
cc: @msizanoen1
remove leftover mentions of `skol` and `int` from the compiler
This PR mostly changes `skol` -> `placeholder` and all cases where `int` is used as a type to `i32`.
Properly encode AnonConst into crate metadata
Fixes#68104
Previous, we were encoding AnonConst as a regular Const, causing us to
treat them differently after being deserialized in another compilation
session.
Given `trait X { type U; }` the bound `<Self as X>::U` now lives
on the type, rather than the trait. This is feature gated on
`feature(generic_associated_types)` for now until more testing can
be done.
The also enabled type-generic associated types since we no longer
need "implies bounds".
We now require that projection candidates are applicable with the
idenitity substs of the trait, rather than allowing predicates that are
only applicable for certain substs.
This commit normalizes projections which contain opaque types (opaque types
are otherwise linted against, which is would have previously made the
test cases added in this commit fail).
Signed-off-by: David Wood <david@davidtw.co>
