Rollup of 7 pull requests #72732
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Rollup of 7 pull requests #72732
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Miri's pointer_offset_inbounds implementation has been moved into librustc_mir as ptr_offset_inbounds (to avoid breaking miri on a nightly update). The comments have been slightly reworked to better match `offset`'s external documentation about what causes UB. The intrinsic implementations are taken directly from miri. Signed-off-by: Joe Richey <joerichey@google.com>
Signed-off-by: Joe Richey <joerichey@google.com>
Signed-off-by: Joe Richey <joerichey@google.com>
Signed-off-by: Joe Richey <joerichey@google.com>
Signed-off-by: Joe Richey <joerichey@google.com>
This is tricky to get right if we want to avoid panicking or wrapping. Signed-off-by: Joe Richey <joerichey@google.com>
The previous code paniced if offset_bytes == i64::MIN. This commit: - Properly computes the absoulte value to avoid this panic - Adds a test for this edge case Signed-off-by: Joe Richey <joerichey@google.com>
This adds new optional methods on `Extend`: `extend_one` add a single element to the collection, and `extend_reserve` pre-allocates space for the predicted number of incoming elements. These are used in `Iterator` for `partition` and `unzip` as they shuffle elements one-at-a-time into their respective collections.
Co-authored-by: David Tolnay <dtolnay@gmail.com>
…or packed borrows in unsafe fns
Detect type parameter that might require lifetime constraint. Do not name `ReVar`s in expected/found output. Reword text suggesting to check the lifetimes.
We now perform the correct checks even if the pointer size differs between the host and target. Signed-off-by: Joe Richey <joerichey@google.com>
Tweak impl signature mismatch errors involving `RegionKind::ReVar` lifetimes Fix rust-lang#66406, fix rust-lang#72106. ``` error: `impl` item signature doesn't match `trait` item signature --> $DIR/trait-param-without-lifetime-constraint.rs:14:5 | LL | fn get_relation(&self) -> To; | ----------------------------- expected `fn(&Article) -> &ProofReader` ... LL | fn get_relation(&self) -> &ProofReader { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found `fn(&Article) -> &ProofReader` | = note: expected `fn(&Article) -> &ProofReader` found `fn(&Article) -> &ProofReader` help: the lifetime requirements from the `impl` do not correspond to the requirements in the `trait` --> $DIR/trait-param-without-lifetime-constraint.rs:10:31 | LL | fn get_relation(&self) -> To; | ^^ consider borrowing this type parameter in the trait ``` r? @nikomatsakis
impl From<[T; N]> for Box<[T]> Based on rust-lang#68692
Make pointer offset methods/intrinsics const Implements rust-lang#71499 using [the implementations from miri](https://github.com/rust-lang/miri/blob/52f5d202bdcfe8986f0615845f8d1647ab8a2c6a/src/shims/intrinsics.rs#L96-L112). I added some tests what's allowed and what's UB. Let me know if any other cases should be added. CC: @RalfJung @oli-obk
linker: Support `-static-pie` and `-static -shared` This PR adds support for passing linker arguments for creating statically linked position-independent executables and "statically linked" shared libraries. Therefore it incorporates the majority of rust-lang#70740 except for the linker rerun hack and actually flipping the "`static-pie` is supported" switch for musl targets.
…afe-fn, r=nikomatsakis Implement RFC 2585: unsafe blocks in unsafe fn Tracking issue: rust-lang#71668 r? @RalfJung cc @nikomatsakis
…chievink borrowck `DefId` -> `LocalDefId` Replaces some `DefId`s which must always be local with `LocalDefId` in `librustc_mir/borrowck`. cc @marmeladema
Add Extend::{extend_one,extend_reserve}
This adds new optional methods on `Extend`: `extend_one` add a single
element to the collection, and `extend_reserve` pre-allocates space for
the predicted number of incoming elements. These are used in `Iterator`
for `partition` and `unzip` as they shuffle elements one-at-a-time into
their respective collections.
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Successful merges:
RegionKind::ReVarlifetimes #67460 (Tweak impl signature mismatch errors involvingRegionKind::ReVarlifetimes)-static-pieand-static -shared#71804 (linker: Support-static-pieand-static -shared)DefId->LocalDefId#72103 (borrowckDefId->LocalDefId)Failed merges:
r? @ghost