Rollup of 8 pull requests #81593
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Rollup of 8 pull requests #81593
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Remove --export-dynamic from the link arguments on the wasm32-wasi target, as it emits spurious exports and increases code size. Leave it in place for wasm32-unknown-unknown and wasm32-unknown-emscripten. Even though it isn't a great solution there, users are likely depending on its behavior there.
- This allows us add fake information after handling migrations if needed. - Capture analysis also priortizes what we see earlier, which means fake information should go in last.
- No Derefs in move closure, this will result in value behind a reference getting moved. - No projections are applied to raw pointers, since these require unsafe blocks. We capture them completely. Motivations for these are recorded here: https://hackmd.io/71qq-IOpTNqzMkPpAI1dVg?view
When `capture_disjoint_fields` is not enabled, checking if the root variable binding is mutable would suffice. However with the feature enabled, the captured place might be mutable because it dereferences a mutable reference. This PR computes the mutability of each capture after capture analysis in rustc_typeck. We store this in `ty::CapturedPlace` and then use `ty::CapturedPlace::mutability` in mir_build and borrow_check.
2229: Fix issues with move closures and mutability
This PR fixes two issues when feature `capture_disjoint_fields` is used.
1. Can't mutate using a mutable reference
2. Move closures try to move value out through a reference.
To do so, we
1. Compute the mutability of the capture and store it as part of the `CapturedPlace` that is written in TypeckResults
2. Restrict capture precision. Note this is temporary for now, to allow the feature to be used with move closures and ByValue captures and might change depending on discussions with the lang team.
- No Derefs are captured for ByValue captures, since that will result in value behind a reference getting moved.
- No projections are applied to raw pointers since these require unsafe blocks. We capture
them completely.
r? ```@nikomatsakis```
Add lint for 2229 migrations Implements the first for RFC 2229 where we make the decision to migrate a root variable based on if the type of the variable needs Drop and if the root variable would be moved into the closure when the feature isn't enabled. r? `@nikomatsakis`
…ichton Don't link with --export-dynamic on wasm32-wasi Remove --export-dynamic from the link arguments on the wasm32-wasi target, as it emits spurious exports and increases code size. Leave it in place for wasm32-unknown-unknown and wasm32-unknown-emscripten. Even though it isn't a great solution there, users are likely depending on its behavior there.
combine: stop eagerly evaluating consts `super_relate_consts` eagerly evaluates constants which doesn't seem too great. I now also finally understand why all of the unused substs test passed. The reason being that we just evaluated the constants in `super_relate_consts` 😆 While this change isn't strictly necessary as evaluating consts here doesn't hurt, it still feels a lot cleaner to do it this way r? ``@oli-obk`` ``@nikomatsakis``
Add suggestion for nested fields Closes #81220 r? `@estebank`
Fix small typo in string.rs
Stabilize int_bits_const Closes #76904 The FCP to stabilize the `int_bits_const` feature completed on the tracking issue.
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@bors r+ rollup=never p=8 |
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📌 Commit bd990cc has been approved by |
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⌛ Testing commit bd990cc with merge 16775304322ec3bc88164d3a2ccfb72a4271b349... |
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