Leaving types unerased would lead to 2 types with a different "name"
getting different move-paths, which would cause major brokenness (see
e.g. rust-lang#42903).

This does not fix any *known* issue, but is required if we want to use
abs_domain with non-erased regions (because the same can easily
have different names). cc @RalfJung.

This fixes an optimization regression by allowing LLVM to see through more
functions.

Closes rust-lang#43272

I use this from time to time debugging LLVM builds, useful to have!

When upgrading to LLVM 5.0 it was found that the leak sanitizer tests were
failing with fatal errors, but they were passing locally when run. Turns out it
looks like they may be using new ptrace-like syscalls so the docker container
now needs `--privileged` when executing to complete the test.

doc: make into_iter example more concise

Also, remove dupe example

Add Span to ast::WhereClause

This PR adds `Span` field to `ast::WhereClause`. The motivation here is to make rustfmt's life easier when recovering comments before and after where clause.
r? @nrc

…aumeGomez

rustdoc: add [src] links to associated functions inside an impl block

While impl blocks currently have a `[src]` link to show the source for the impl block as a whole, individual methods inside that impl block do not. This can pose a problem for structs with a lot of methods, like many in libstd. This change adds little `[src]` links to individual methods that point directly to the function in the bundled source.

fixes rust-lang#12932

![methods on HashMap, showing the new src links](https://user-images.githubusercontent.com/5217170/28686066-9e7a19de-72cf-11e7-8e6b-b7d60fa33032.png)

erase types in the move-path abstract domain

Leaving types unerased would lead to 2 types with a different "name"
getting different move-paths, which would cause major brokenness (see
e.g. rust-lang#42903).

This does not fix any *known* issue, but is required if we want to use
abs_domain with non-erased regions (because the same can easily
have different names). cc @RalfJung.

r? @eddyb

…Sushi

std: Mark `Layout::repeat` as `#[inline]`

This fixes an optimization regression by allowing LLVM to see through more
functions.

Closes rust-lang#43272

Flag docker invocations as --privileged on CI

When upgrading to LLVM 5.0 it was found that the leak sanitizer tests were
failing with fatal errors, but they were passing locally when run. Turns out it
looks like they may be using new ptrace-like syscalls so the docker container
now needs `--privileged` when executing to complete the test.

Update redox sys

- Add JoinHandleExt
- Split FL and FD for fcntl

…ulacrum

rustbuild: Enable building LLVM

I use this from time to time debugging LLVM builds, useful to have!