If a primary bundle doesn't contain a message then the fallback bundle
is used. However, if the primary bundle's message is broken (e.g. it
refers to a interpolated variable that the compiler isn't providing)
then this would just result in a compiler panic. While there aren't any
primary bundles right now, this is the type of issue that could come up
once translation is further along.

Signed-off-by: David Wood <david.wood@huawei.com>

In our source page highlighting, we were generating `<span class="op">`
tags for all "operators", including e.g. `<` `>` around generic
parameters, `*`, `&`. This contributed significantly to DOM size, but
we don't actually style `.op` except in the ayu theme.

Remove the styles for `.op` in ayu, and stop generating the `<span>`s.

This reduces DOM size of an example page[1] from 265,938 HTML elements
to 242,165 elements, a 9% reduction.

[1]:
https://doc.rust-lang.org/nightly/src/core/up/up/stdarch/crates/core_arch/src/x86/avx512f.rs.html

…lett

Optimize thread ID generation

By using atomics where available, thread IDs can be generated without locking while still enforcing uniqueness.

…cottmcm

cleanup code w/ pointers in std a little

Use pointer methods (`byte_add`, `null_mut`, etc) to make code in std a little nicer.

…lcnr

add -Zextra-const-ub-checks to enable more UB checking in const-eval

Cc rust-lang#99923
r? `@oli-obk`

…faults, r=lcnr

Generalize trait object generic param check to aliases.

The current algorithm only checks that `Self` does not appear in defaults for traits.  This is not sufficient for trait aliases.
This PR moves the check to trait object elaboration, which sees through trait aliases.

Fixes rust-lang#82927.
Fixes rust-lang#84789.

…triplett

Adding more verbose documentation for `std::fmt::Write`

Attempts to address rust-lang#98861

…r=compiler-errors

errors: don't fail on broken primary translations

If a primary bundle doesn't contain a message then the fallback bundle is used. However, if the primary bundle's message is broken (e.g. it refers to a interpolated variable that the compiler isn't providing) then this would just result in a compiler panic. While there aren't any primary bundles right now, this is the type of issue that could come up once translation is further along.

r? ```@compiler-errors``` (since this comes out of a in-person discussion we had at RustConf)

Suggest const and static for global variable

Fixing rust-lang#100394

…eGomez

rustdoc: don't generate DOM element for operator

In our source page highlighting, we were generating `<span class="op">` tags for all "operators", including e.g. `<` `>` around generic parameters, `*`, `&`. This contributed significantly to DOM size, but we don't actually style `.op` except in the ayu theme.

Remove the styles for `.op` in ayu, and stop generating the `<span>`s.

This reduces DOM size of an example page[1] from 265,938 HTML elements to 242,165 elements, a 9% reduction.

r? ``@GuillaumeGomez``

Demo: (warning - slow!) https://rustdoc.crud.net/jsha/highlight-lighter/src/core/up/up/stdarch/crates/core_arch/src/x86/avx512f.rs.html

[1]:
https://doc.rust-lang.org/nightly/src/core/up/up/stdarch/crates/core_arch/src/x86/avx512f.rs.html

…=Mark-Simulacrum

Add two let else regression tests

Adds a regression test for rust-lang#94176, as it was fixed by rust-lang#98574 but doesn't have a regression test. The PR also incorporates a commit from rust-lang#94012 which added a test for an issue discovered in that PR.

Originally they have been part of rust-lang#99291, but I've moved them out in the hopes of getting them merged more quickly, as that PR is already open since a month, and so that rust-lang#99291 can focus on the drop order part of things.

Closes rust-lang#94176
Closes rust-lang#96961 -- dupe of rust-lang#94176