| Age | Commit message (Collapse) | Author | Lines |
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Remove `ffi_returns_twice` feature
The [tracking issue](https://github.com/rust-lang/rust/issues/58314) and [RFC](https://github.com/rust-lang/rfcs/pull/2633) have been closed for a couple of years.
There is also an attribute gate in R-A which should be removed if this lands.
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They've been deprecated for four years.
This commit includes the following changes.
- It eliminates the `rustc_plugin_impl` crate.
- It changes the language used for lints in
`compiler/rustc_driver_impl/src/lib.rs` and
`compiler/rustc_lint/src/context.rs`. External lints are now called
"loaded" lints, rather than "plugins" to avoid confusion with the old
plugins. This only has a tiny effect on the output of `-W help`.
- E0457 and E0498 are no longer used.
- E0463 is narrowed, now only relating to unfound crates, not plugins.
- The `plugin` feature was moved from "active" to "removed".
- It removes the entire plugins chapter from the unstable book.
- It removes quite a few tests, mostly all of those in
`tests/ui-fulldeps/plugin/`.
Closes #29597.
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It's a better name, and lets "active features" refer to the features
that are active in a particular program, due to being declared or
enabled by the edition.
The commit also renames `Features::enabled` as `Features::active` to
match this; I changed my mind and have decided that "active" is a little
better thatn "enabled" for this, particularly because a number of
pre-existing comments use "active" in this way.
Finally, the commit renames `Status::Stable` as `Status::Accepted`, to
match `ACCEPTED_FEATURES`.
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`State` is used to distinguish active vs accepted vs removed features.
However, these can also be distinguished by their location, in
`ACTIVE_FEATURES`, `ACCEPTED_FEATURES`, and `REMOVED_FEATURES`.
So this commit removes `State` and moves the internals of its variants
next to the `Feature` in each element of `*_FEATURES`, introducing new
types `ActiveFeature` and `RemovedFeature`. (There is no need for
`AcceptedFeature` because `State::Accepted` had no fields.)
This is a tighter type representation, avoids the need for some runtime
checks, and makes the code a bit shorter.
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Bump bootstrap compiler to just-released beta
https://forge.rust-lang.org/release/process.html#master-bootstrap-update-t-2-day-tuesday
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There is a single features (`no_stack_check`) in
`STABLE_REMOVED_FEATURES`. But the treatment of
`STABLE_REMOVED_FEATURES` and `REMOVED_FEATURES` is actually identical.
So this commit just merges them, and uses a comment to record
`no_stack_check`'s unique "stable removed" status.
This also lets `State::Stabilized` (which was a terrible name) be
removed.
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This reverts commit abc0660118cc95f47445fd33502a11dd448f5968.
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Report allocation errors as panics
OOM is now reported as a panic but with a custom payload type (`AllocErrorPanicPayload`) which holds the layout that was passed to `handle_alloc_error`.
This should be review one commit at a time:
- The first commit adds `AllocErrorPanicPayload` and changes allocation errors to always be reported as panics.
- The second commit removes `#[alloc_error_handler]` and the `alloc_error_hook` API.
ACP: https://github.com/rust-lang/libs-team/issues/192
Closes #51540
Closes #51245
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* account
* achieved
* advising
* always
* ambiguous
* analysis
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* appropriate
* build
* candidates
* cascading
* category
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* deterministic
* discriminant
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* documentation
* doesn't
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* evaluability
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* imported
* incompatible
* infringing
* initialized
* into
* intrinsic
* introduced
* javascript
* liveness
* metadata
* monomorphization
* nonexistent
* nontrivial
* obligation
* obligations
* offset
* opaque
* opportunities
* opt-in
* outlive
* overlapping
* paragraph
* parentheses
* poisson
* precisely
* predecessors
* predicates
* preexisting
* propagated
* really
* reentrant
* referent
* responsibility
* rustonomicon
* shortcircuit
* simplifiable
* simplifications
* specify
* stabilized
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* two
* unclosed
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* visibility
* volatile
* workaround
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
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Signed-off-by: Yuki Okushi <jtitor@2k36.org>
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r=pnkfelix
Remove the `infer_static_outlives_requirements` feature
Closes #54185
r? ``@pnkfelix``
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This should significantly reduce the frequency of merge conflicts.
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:sparkles:
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- [x] Removed `?const` and change uses of `?const`
- [x] Added `~const` to the AST. It is gated behind const_trait_impl.
- [x] Validate `~const` in ast_validation.
- [ ] Add enum `BoundConstness` to the HIR. (With variants `NotConst` and
`ConstIfConst` allowing future extensions)
- [ ] Adjust trait selection and pre-existing code to use `BoundConstness`.
- [ ] Optional steps (*for this PR, obviously*)
- [ ] Fix #88155
- [ ] Do something with constness bounds in chalk
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This commit intends to fill out some of the remaining pieces of the
C-unwind ABI. This has a number of other changes with it though to move
this design space forward a bit. Notably contained within here is:
* On `panic=unwind`, the `extern "C"` ABI is now considered as "may
unwind". This fixes a longstanding soundness issue where if you
`panic!()` in an `extern "C"` function defined in Rust that's actually
UB because the LLVM representation for the function has the `nounwind`
attribute, but then you unwind.
* Whether or not a function unwinds now mainly considers the ABI of the
function instead of first checking the panic strategy. This fixes a
miscompile of `extern "C-unwind"` with `panic=abort` because that ABI
can still unwind.
* The aborting stub for non-unwinding ABIs with `panic=unwind` has been
reimplemented. Previously this was done as a small tweak during MIR
generation, but this has been moved to a separate and dedicated MIR
pass. This new pass will, for appropriate functions and function
calls, insert a `cleanup` landing pad for any function call that may
unwind within a function that is itself not allowed to unwind. Note
that this subtly changes some behavior from before where previously on
an unwind which was caught-to-abort it would run active destructors in
the function, and now it simply immediately aborts the process.
* The `#[unwind]` attribute has been removed and all users in tests and
such are now using `C-unwind` and `#![feature(c_unwind)]`.
I think this is largely the last piece of the RFC to implement.
Unfortunately I believe this is still not stabilizable as-is because
activating the feature gate changes the behavior of the existing `extern
"C"` ABI in a way that has no replacement. My thinking for how to enable
this is that we add support for the `C-unwind` ABI on stable Rust first,
and then after it hits stable we change the behavior of the `C` ABI.
That way anyone straddling stable/beta/nightly can switch to `C-unwind`
safely.
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