sync with rust-lang/rust

… initial stack size to rtpSpawn

vxWorks: set DEFAULT_MIN_STACK_SIZE to 256K and use min_stack to pass initial stack size to rtpSpawn

The wasm32-wasi target respects configuration around `crt-static` in
general, but is defaulted to being static. This interacted badly with
code which validated the `cdylib` crate type for `wasm32-wasi`,
erroneously saying that the `cdylib` crate type wasn't supported on
`wasm32-wasi` by default. This commit sets the appropriate flag in
`wasm32_wasi`'s target specification to indicate that the `cdylib` crate
type is supported regardless of `crt-static`

Closes rust-lang#64187

remove Copyright notic

Improve hygiene of `alloc::format!`

`format` now uses `format_args` though a `__export` module, as described in rust-lang#63687 (comment).

Fixes rust-lang#63687

Replace file_stem by file_name in rustdoc markdown

Before this PR, a file name like `some.file.md` will be output to a file named `some.html` with is not correct because the expected output file must be `some.file.html`

Tweak unsatisfied HRTB errors

r? @oli-obk

Close rust-lang#35180.

vxWorks: set DEFAULT_MIN_STACK_SIZE to 256K and use min_stack to pass initial stack size to rtpSpawn

vxWorks: set DEFAULT_MIN_STACK_SIZE to 256K and use min_stack to pass initial stack size to rtpSpawn

r? @alexcrichton
cc @n-salim

rustc: Allow the cdylib crate type with wasm32-wasi

The wasm32-wasi target respects configuration around `crt-static` in
general, but is defaulted to being static. This interacted badly with
code which validated the `cdylib` crate type for `wasm32-wasi`,
erroneously saying that the `cdylib` crate type wasn't supported on
`wasm32-wasi` by default. This commit sets the appropriate flag in
`wasm32_wasi`'s target specification to indicate that the `cdylib` crate
type is supported regardless of `crt-static`

Closes rust-lang#64187

…r, r=cramertj

documentation for AtomicPtr CAS operations

The examples in the documentation for AtomicPtr CAS operations only show code that does *not* perform the CAS operation. I suggest to change them so that they actually do exchange the AtomicPtr's value.