…brary

Fixes 76271

Issue rust-lang#74616 tracks a backwards-compatibility hack for certain macros.
This has is implemented by hard-coding the filenames and macro names of
certain code that we want to continue to compile.

However, the initial implementation of the hack was based on the
directory structure when building the crate from its repository (e.g.
`js-sys/src/lib.rs`). When the crate is build as a dependency, it will
include a version number from the clone from the cargo registry (e.g.
`js-sys-0.3.17/src/lib.rs`), which would fail the check.

This commit modifies the backwards-compatibility hack to check that
desired crate name (`js-sys` or `time-macros-impl`) is a prefix of the
proper part of the path.

See rust-lang#76070 (comment)
for more details.

Fixes rust-lang#76367.

I believe the documentation is currently a little misleading.

For example, in the docs for `filter()`:

> If the closure returns `false`, it will try again, and call the closure on
> the next element, seeing if it passes the test.

This kind of implies that if the closure returns true then we *don't* "try
again" and no further elements are considered. In actuality that's not the
case, every element is tried regardless of what happened with the previous
element.

This change tries to clarify that by removing the uses of "try again"
altogether.

rust-lang/llvm-project#73

Try to improve the documentation of `filter()` and `filter_map()`.

I believe the documentation is currently a little misleading.

For example, in the docs for `filter()`:

> If the closure returns `false`, it will try again, and call the closure on
> the next element, seeing if it passes the test.

This kind of implies that if the closure returns true then we *don't* "try
again" and no further elements are considered. In actuality that's not the
case, every element is tried regardless of what happened with the previous
element.

This change tries to clarify that by removing the uses of "try again"
altogether.

…odrAus

Use Arc::clone and Rc::clone in documentation

This PR replaces uses of `x.clone()` by `Rc::clone(&x)` (or `Arc::clone(&x)`) to better match the documentation for those types.

@rustbot modify labels: T-doc

…racking_issue, r=joshtriplett

Update tracking issue for const_caller_location

Update the tracking issue to rust-lang#76156, as suggested in rust-lang#76105.

Add missing link in README

Move some Vec UI tests into alloc unit tests

A bit of work towards rust-lang#76268, makes a number of the Vec UI tests that are simply running code into unit tests. Ensured that they are being run when testing liballoc locally.

Allow try blocks as the argument to return expressions

Fixes rust-lang#76271

I don't think this needs to be edition-aware (phew) since `return try` in 2015 is also the start of an expression, just with a struct literal instead of a block (`return try { x: 4, y: 5 }`).

…, r=alexcrichton

Disable use of `--eh-frame-hdr` on wasm32.

Set wasm32's `TargetOptions::eh_frame_header` to false so that we don't pass `--eh-frame-hdr` to `wasm-ld`, which doesn't support that flag.

r? @alexcrichton

…imulacrum

Fix rust.use-lld when linker is not set

Fixes rust-lang#76127 (comment)

Previously when `[<target>].linker` was not configured `rust.use-lld` would set it to `rust-lld` on platforms where it should not.

…t, r=petrochenkov

Account for version number in NtIdent hack

Issue rust-lang#74616 tracks a backwards-compatibility hack for certain macros.
This has is implemented by hard-coding the filenames and macro names of
certain code that we want to continue to compile.

However, the initial implementation of the hack was based on the
directory structure when building the crate from its repository (e.g.
`js-sys/src/lib.rs`). When the crate is build as a dependency, it will
include a version number from the clone from the cargo registry (e.g.
`js-sys-0.3.17/src/lib.rs`), which would fail the check.

This commit modifies the backwards-compatibility hack to check that
desired crate name (`js-sys` or `time-macros-impl`) is a prefix of the
proper part of the path.

See rust-lang#76070 (comment)
for more details.

…ority, r=cuviper

Update llvm-project to include PR 73

rust-lang/llvm-project#73

r? @cuviper

…ll-soundness, r=nagisa

Fix dropck issue of SyncOnceCell.

Fixes rust-lang#76367.