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also reorder foreign_items to fix the grouping, and reorder the tests_minimal invocations to be more consistent
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Let miri and const eval execute intrinsics' fallback bodies
fixes https://github.com/rust-lang/miri/issues/3397
r? ``@RalfJung``
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and make them separate from 'shims'
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preserve all UB that the native intrinsic would have
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The functionality of all three crates is now available in the standard library.
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add smoke tests for basic PathBuf interactions
I wrote these while debugging [this](https://github.com/rust-lang/miri-test-libstd/actions/runs/8849912635/job/24302962983); it turns out the issue is [more complicated](https://github.com/rust-lang/rust/issues/124409) but these tests still seemed worth keeping.
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`#[collapse_debuginfo]`
`-Z debug-macros` is "stabilized" by enabling it by default and removing.
`-Z collapse-macro-debuginfo` is stabilized as `-C collapse-macro-debuginfo`.
It now supports all typical boolean values (`parse_opt_bool`) in addition to just yes/no.
Default value of `collapse_debuginfo` was changed from `false` to `external` (i.e. collapsed if external, not collapsed if local).
`#[collapse_debuginfo]` attribute without a value is no longer supported to avoid guessing the default.
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Stabilize `std::path::absolute`
FCP complete in https://github.com/rust-lang/rust/issues/92750#issuecomment-2075046985
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Implement LLVM x86 AVX2 intrinsics
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And suggest adding the `#[coroutine]` to the closure
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avoid 'let _' in tests where we actually want the value to be computed
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windows: basic support for GetUserProfileDirectoryW
Fixes https://github.com/rust-lang/miri/issues/3499
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Dellvmize some intrinsics (use `u32` instead of `Self` in some integer intrinsics)
This implements https://github.com/rust-lang/compiler-team/issues/693 minus what was implemented in #123226.
Note: I decided to _not_ change `shl`/... builder methods, as it just doesn't seem worth it.
r? ``@scottmcm``
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Signed-off-by: forcedebug <forcedebug@outlook.com>
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Add `-Zmiri-env-set` to set environment variables without modifying the host environment
This option allows to pass environment variables to the interpreted program without needing to modify the host environment (which may have undesired effects in some cases).
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Miri: detect wrong vtables in wide pointers
Fixes https://github.com/rust-lang/miri/issues/3497.
Needed to catch the UB that https://github.com/rust-lang/rust/pull/123572 will start exploiting.
r? `@oli-obk`
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Add simple async drop glue generation
This is a prototype of the async drop glue generation for some simple types. Async drop glue is intended to behave very similar to the regular drop glue except for being asynchronous. Currently it does not execute synchronous drops but only calls user implementations of `AsyncDrop::async_drop` associative function and awaits the returned future. It is not complete as it only recurses into arrays, slices, tuples, and structs and does not have same sensible restrictions as the old `Drop` trait implementation like having the same bounds as the type definition, while code assumes their existence (requires a future work).
This current design uses a workaround as it does not create any custom async destructor state machine types for ADTs, but instead uses types defined in the std library called future combinators (deferred_async_drop, chain, ready_unit).
Also I recommend reading my [explainer](https://zetanumbers.github.io/book/async-drop-design.html).
This is a part of the [MCP: Low level components for async drop](https://github.com/rust-lang/compiler-team/issues/727) work.
Feature completeness:
- [x] `AsyncDrop` trait
- [ ] `async_drop_in_place_raw`/async drop glue generation support for
- [x] Trivially destructible types (integers, bools, floats, string slices, pointers, references, etc.)
- [x] Arrays and slices (array pointer is unsized into slice pointer)
- [x] ADTs (enums, structs, unions)
- [x] tuple-like types (tuples, closures)
- [ ] Dynamic types (`dyn Trait`, see explainer's [proposed design](https://github.com/zetanumbers/posts/blob/main/async-drop-design.md#async-drop-glue-for-dyn-trait))
- [ ] coroutines (https://github.com/rust-lang/rust/pull/123948)
- [x] Async drop glue includes sync drop glue code
- [x] Cleanup branch generation for `async_drop_in_place_raw`
- [ ] Union rejects non-trivially async destructible fields
- [ ] `AsyncDrop` implementation requires same bounds as type definition
- [ ] Skip trivially destructible fields (optimization)
- [ ] New [`TyKind::AdtAsyncDestructor`](https://github.com/zetanumbers/posts/blob/main/async-drop-design.md#adt-async-destructor-types) and get rid of combinators
- [ ] [Synchronously undroppable types](https://github.com/zetanumbers/posts/blob/main/async-drop-design.md#exclusively-async-drop)
- [ ] Automatic async drop at the end of the scope in async context
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environment
This option allows to pass environment variables to the interpreted program without needing to modify the host environment (which may have undesired effects in some cases).
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let's just disable it there, this code is not platform-dependent anyway
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Address reuse improvements and fixes
- when an address gets reused, establish a happens-before link in the data race model
- do not reuse stack addresses, and make the reuse rate configurable
Fixes https://github.com/rust-lang/miri/issues/3450
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race model
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make realloc with a size of zero fail
Fixes https://github.com/rust-lang/miri/issues/2774
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isolation
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