Updates `tools.mk` to explicitly require `SHELL := /bin/dash`, since CI
uses `dash` but other environments (including developer local machines)
may default to `bash`.

Replaces bash-specific shell command in one Makefile with a
dash-compatible alternative, and re-enables the affected Makefile test.

Removes apparently redundant definition of `UNAME`.

Move the note about dropping cloudabi next to the other platform support
changes.

Introduced in d3c4dbd, noticed only
after the fact, sorry. 😅

Signed-off-by: Daniel Egger <daniel@eggers-club.de>

We now allow two new casts:

- mut array reference to mut ptr. Example:

      let mut x: [usize; 2] = [0, 0];
      let p = &mut x as *mut usize;

  We allow casting const array references to const pointers so not
  allowing mut references to mut pointers was inconsistent.

- mut array reference to const ptr. Example:

      let mut x: [usize; 2] = [0, 0];
      let p = &mut x as *const usize;

  This was similarly inconsistent as we allow casting mut references to
  const pointers.

Existing test 'vector-cast-weirdness' updated to test both cases.

Fixes rust-lang#24151

Fixes rust-lang#81928

“Ask forgiveness not permission”  : this makes the code both simpler and more robust

…rochenkov

Borrowck: don't calculate unused info when reporting move errors

Allow casting mut array ref to mut ptr

Allow casting mut array ref to mut ptr

We now allow two new casts:

- mut array reference to mut ptr. Example:

      let mut x: [usize; 2] = [0, 0];
      let p = &mut x as *mut usize;

  We allow casting const array references to const pointers so not
  allowing mut references to mut pointers was inconsistent.

- mut array reference to const ptr. Example:

      let mut x: [usize; 2] = [0, 0];
      let p = &mut x as *const usize;

  This was similarly inconsistent as we allow casting mut references to
  const pointers.

Existing test 'vector-cast-weirdness' updated to test both cases.

Fixes rust-lang#24151

Ensures `make` tests run under /bin/dash (if available), like CI, and fixes a Makefile

Note: This cherrypicks rust-lang#81688 (``@pnkfelix)``

Updates `tools.mk` to explicitly require `SHELL := /bin/dash`, since CI uses `dash` but other environments (including developer local machines) may default to `bash`.

Replaces bash-specific shell command in one Makefile with a dash-compatible alternative, and re-enables the affected Makefile test.

Removes apparently redundant definition of `UNAME`.

Also see: [zulip discussion thread](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/how.20to.20run.2Fbless.20src.2Ftest.2Frun-make-fulldeps.2Fcoverage.20.3F)

r? ``@pnkfelix``

FYI: ``@wesleywiser`` ``@tmandry``

Relax ItemCtxt::to_ty lifetime

Tiny simplification by relaxing a lifetime.

…atform-notes, r=XAMPPRocky

RELEASES.md 1.50: Group platform support notes together

Move the note about dropping cloudabi next to the other platform support
changes.

bootstrap: Locate llvm-dwp based on llvm-config bindir

Fixes rust-lang#81949.

Tested by successfully building 1.50.0 pre-release, which is where I originally hit the issue (https://internals.rust-lang.org/t/rust-1-50-0-pre-release-testing/14012/4?u=dtolnay). Tested both with and without prebuilt LLVM. The check for dry_run is necessary in the non-prebuilt case because the llvm-config built by bootstrap won't exist yet.

Fix assosiated typo

Introduced in d3c4dbd, noticed only
after the fact, sorry. 😅

Signed-off-by: Daniel Egger <daniel@eggers-club.de>

Fix documentation not showing on localStorage error

Fixes rust-lang#81928

The [documentation for setItem](https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem) specifies:

> developers should make sure to always catch possible exceptions from setItem()

…r=Mark-Simulacrum

bootstrap: fix wrong docs installation path

This PR fixes rust-lang#81967, a regression introduced by rust-lang#80797. The commit has already been backported to stable 1.50.0.

r? ``@Mark-Simulacrum``