Previously the sysroot directory was purged on every build and mingw startup objects were rebuilt unconditionally and always triggered test reruns.
Now mingw startup objects are built in the native directory and then copied into the sysroot directory. They are also rebuilt only when necessary, so test caching works.
bors [Fri, 24 Feb 2017 02:40:16 +0000 (02:40 +0000)]
Auto merge of #39851 - alexcrichton:verify-unstable, r=brson
test: Verify all sysroot crates are unstable
As we continue to add more crates to the compiler and use them to implement
various features we want to be sure we're not accidentally expanding the API
surface area of the compiler! To that end this commit adds a new `run-make` test
which will attempt to `extern crate foo` all crates in the sysroot, verifying
that they're all unstable.
This commit discovered that the `std_shim` and `test_shim` crates were
accidentally stable and fixes the situation by deleting those shims. The shims
are no longer necessary due to changes in Cargo that have happened since they
were originally incepted.
bors [Tue, 21 Feb 2017 23:46:20 +0000 (23:46 +0000)]
Auto merge of #39855 - steveklabnik:mdbook-reference, r=GuillaumeGomez
Port the reference to mdbook
Part of #39588.
This is only a work in progress. Still left to do:
- [x] double check contents weren't duplicated/lost with the move to individual pages (I'm going to do this)
- [x] fix up links [and footnotes](https://github.com/rust-lang/rust/pull/39855#issuecomment-280168170) (@frewsxcv has volunteered to help with this)
- [x] change `src/doc/reference.md` to redirect to the book
- [x] move the reference on the doc index to be part of the bookshelf
Alex Crichton [Wed, 15 Feb 2017 16:53:18 +0000 (08:53 -0800)]
test: Verify all sysroot crates are unstable
As we continue to add more crates to the compiler and use them to implement
various features we want to be sure we're not accidentally expanding the API
surface area of the compiler! To that end this commit adds a new `run-make` test
which will attempt to `extern crate foo` all crates in the sysroot, verifying
that they're all unstable.
This commit discovered that the `std_shim` and `test_shim` crates were
accidentally stable and fixes the situation by deleting those shims. The shims
are no longer necessary due to changes in Cargo that have happened since they
were originally incepted.
bors [Tue, 21 Feb 2017 04:36:46 +0000 (04:36 +0000)]
Auto merge of #39990 - CryZe:emscripten-no-vectorization, r=alexcrichton
Turn off Vectorization for Emscripten
When targeting Emscripten, rustc emits Vector Instructions by default. However Web Assembly doesn't support Vector Instructions yet, which causes Binaryen to fail converting the intermediate asm.js code to Web Assembly. While asm.js kind of supports Vector Instructions, they aren't supported by any browser other than Firefox, often meaning that they need to be emulated very slowly. So it should just be turned off
for all Emscripten targets.
Christopher Serr [Mon, 20 Feb 2017 22:20:06 +0000 (23:20 +0100)]
Turn off Vectorization for Emscripten
When targeting Emscripten, rustc emits Vector Instructions by default.
However Web Assembly doesn't support Vector Instructions yet, which
causes Binaryen to fail converting the intermediate asm.js code to Web
Assembly. While asm.js kind of supports Vector Instructions, they
aren't supported by any browser other than Firefox, often meaning that
they need to be emulated very slowly. So it should just be turned off
for all Emscripten targets.
bors [Mon, 20 Feb 2017 21:31:17 +0000 (21:31 +0000)]
Auto merge of #39717 - pnkfelix:check-timestamps-in-compiletest-miropt, r=alexcrichton
When compiletest'ing src/test/mir-opt, check timestamps.
The tests in src/test/mir-opt embed references to generated files. The names of the generated files embed node id's, which will change depending on the content of the original source.
To guard against comparisons against stale output, check the timestamps of the supposed output against the timestamp of the original source (i.e. any output should be at least as new as the source that was recompiled).
Corey Farwell [Mon, 20 Feb 2017 17:42:55 +0000 (12:42 -0500)]
Rollup merge of #39976 - steveklabnik:reenable-book-linkchecker, r=frewsxcv
Reenable linkchecker for books
In some senses, this is a revert of https://github.com/rust-lang/rust/pull/39633/commits/cacb3bc9c741a7d41a1085af850cd3ff852307f5#diff-b64563d143f859565c8357a28ef81101R212; we disabled linkchecker for the book because the links were added by JavaScript. Now, that's fixed upstream, and so we can re-enable the checker.
This also involves two other fixes: we have to check for `name`s as well as `id`s for links, and the linking algorithm of mdBook changed to the same as rustdoc's, so we change some links back.
~~~This isn't quite ready yet; it's [depending on a PR of mine to mdBook](https://github.com/azerupi/mdBook/pull/209). After that's released, this should be the last of these kinds of shenanigans~~~ 😄
Corey Farwell [Mon, 20 Feb 2017 17:42:53 +0000 (12:42 -0500)]
Rollup merge of #39913 - nikomatsakis:inference-error, r=pnkfelix
Report full details of inference errors
When the old suggestion machinery was removed by @brson in https://github.com/rust-lang/rust/pull/37057, it was not completely removed. There was a bit of code that had the job of going through errors and finding those for which suggestions were applicable, and it remained, causing us not to emit the full details of such errors. This PR removes that.
I've also added various lifetime tests to the UI test suite (so you can also see the before/after there). I have some concrete thoughts on how to improve these cases and am planning on writing those up in some mentoring issues (@CengizIO has expressed interest in working on those changes, so I plan to work with him on it, at least to start).
Steve Klabnik [Mon, 20 Feb 2017 14:30:42 +0000 (09:30 -0500)]
Enable linkchecker on books
Previously, mdBook used JavaScript to add header links, so we
skipped checking the book. As of
https://github.com/rust-lang/rust/pull/39966, it no longer does,
so we can start checking again.
There is a twist, though: it uses name instead of id, so let's test
for both. They're both valid links anyway, so it's good to have the
checker check anyway.
bors [Mon, 20 Feb 2017 15:06:07 +0000 (15:06 +0000)]
Auto merge of #39748 - Rufflewind:master, r=steveklabnik
Rust Book: Generics: Resolving ambiguities
- Add a small section to generics.md to explain how ambiguities in type inference can be resolved using the `::<>` syntax.
- Add links from syntax-index.md and iterators.md.
- Minor edits to iterators.md and structs.md.
The original commit was created because mdBook and rustdoc had
different generation algorithms for header links; now with
https://github.com/rust-lang/rust/pull/39966 , the algorithms
are the same. So let's undo this change.
... when I came across this problem, I said "eh, this isn't fun,
but it doesn't take that long." I probably should have just actually
taken the time to fix upstream, given that they were amenable. Oh
well!
bors [Mon, 20 Feb 2017 03:27:06 +0000 (03:27 +0000)]
Auto merge of #39966 - steveklabnik:update-mdbook, r=GuillaumeGomez
Update mdbook version
This version of mdbook includes
https://github.com/azerupi/mdBook/pull/207 , which is needed so that
we can start doing linkchecker on the various books.
Phil Ruffwind [Sat, 11 Feb 2017 22:00:56 +0000 (17:00 -0500)]
Rust Book: Generics: Resolving ambiguities
- Add a small section to generics.md to explain how ambiguities in type
inference can be resolved using the ::<> syntax.
- Add links from syntax-index.md and iterators.md.
- Minor edits to iterators.md and structs.md.
Steve Klabnik [Sun, 19 Feb 2017 23:55:57 +0000 (18:55 -0500)]
Update mdbook version
This version of mdbook includes
https://github.com/azerupi/mdBook/pull/207 , which is needed so that
we can start doing linkchecker on the various books.
bors [Mon, 20 Feb 2017 00:00:53 +0000 (00:00 +0000)]
Auto merge of #39955 - mp4096:master, r=GuillaumeGomez
Docs: Better explanation of return values for min, max functions for the Iterator trait
Added an explanation that `None` is returned if an iterator is empty.
Also added examples for `max` and `min`. I chose not to add examples for other functions like `max_by_key` etc. so that the examples stay concised and focused on the main functionality.
bors [Sat, 18 Feb 2017 12:17:06 +0000 (12:17 +0000)]
Auto merge of #39887 - nikomatsakis:issue-39292, r=arielb1
erase late bound regions in `get_vtable_methods()`
Higher-ranked object types can otherwise cause late-bound regions to
sneak into the substs, leading to the false conclusion that some method
is unreachable.
r? @arielb1, who wrote the heart of this patch anyhow
bors [Fri, 17 Feb 2017 22:12:00 +0000 (22:12 +0000)]
Auto merge of #39837 - alexcrichton:llvm-crt-static, r=brson
rustc: Link statically to the MSVCRT
This commit changes all MSVC rustc binaries to be compiled with
`-C target-feature=+crt-static` to link statically against the MSVCRT instead of
dynamically (as it does today). This also necessitates compiling LLVM in a
different fashion, ensuring it's compiled with `/MT` instead of `/MD`.
Niko Matsakis [Fri, 17 Feb 2017 15:32:25 +0000 (10:32 -0500)]
add some sample UI error test cases
These are some samples that I have been focusing on improving over
time. In this PR, I mainly want to stem the bleeding where we in some
cases we show an error that gives you no possible way to divine the
problem.
bors [Fri, 17 Feb 2017 07:32:18 +0000 (07:32 +0000)]
Auto merge of #39852 - alexcrichton:appveyor-separate-dist, r=brson
appveyor: Move MSVC dist builds to their own builder
In the long run we want to separate out the dist builders from the test
builders. This provides us leeway to expand the dist builders with more tools
(e.g. Cargo and the RLS) without impacting cycle times.
Currently the Travis dist builders double-up the platforms they provide builds
for, so I figured we could try that out for MSVC as well. This commit adds a new
AppVeyor builder which runs a dist for all the MSVC targets:
If this takes too long and/or times out we'll need to split this up. In any case
we're going to need more capacity from AppVeyor no matter what becaue the two
pc-windows-gnu targets can't cross compile so we need at least 2 more builders
no matter what.
bors [Thu, 16 Feb 2017 20:32:45 +0000 (20:32 +0000)]
Auto merge of #38368 - arthurprs:hm-adapt, r=alexcrichton
Adaptive hashmap implementation
All credits to @pczarn who wrote https://github.com/rust-lang/rfcs/pull/1796 and https://github.com/contain-rs/hashmap2/pull/5
**Background**
Rust std lib hashmap puts a strong emphasis on security, we did some improvements in https://github.com/rust-lang/rust/pull/37470 but in some very specific cases and for non-default hashers it's still vulnerable (see #36481).
This is a simplified version of https://github.com/rust-lang/rfcs/pull/1796 proposal sans switching hashers on the fly and other things that require an RFC process and further decisions. I think this part has great potential by itself.
**Proposal**
This PR adds code checking for extra long probe and shifts lengths (see code comments and https://github.com/rust-lang/rfcs/pull/1796 for details), when those are encountered the hashmap will grow (even if the capacity limit is not reached yet) _greatly_ attenuating the degenerate performance case.
We need a lower bound on the minimum occupancy that may trigger the early resize, otherwise in extreme cases it's possible to turn the CPU attack into a memory attack. The PR code puts that lower bound at half of the max occupancy (defined by ResizePolicy). This reduces the protection (it could potentially be exploited between 0-50% occupancy) but makes it completely safe.
**Drawbacks**
* May interact badly with poor hashers. Maps using those may not use the desired capacity.
* It adds 2-3 branches to the common insert path, luckily those are highly predictable and there's room to shave some in future patches.
* May complicate exposure of ResizePolicy in the future as the constants are a function of the fill factor.
**Example**
Example code that exploit the exposure of iteration order and weak hasher.
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