Rollup merge of #27019 - akiss77:pr-aarch64-morestack-section, r=alexcrichton
When building for AArch64/Linux, __morestack ends up in the .note.GNU-stack section,
which causes missing references for the linker. By using the func/endfunc macros
from macros.S we get __morestack right to .text (and a bit more on the side).
Rollup merge of #26950 - AlisdairO:memset, r=alexcrichton
In general, it's undesirable to have read_to_end use a buffer with uninitialized memory, as that could lead to undefined behaviour in the event of a bad Read implementation. Since we control the implementations of Read for Stdin and File, however, it should be okay for us to specialise them to improve performance. This PR is to do that!
Adds some unsafe code to deal with creating the buffers. Since the read_to_end function needed to be used from the io and fs crates, I moved it into a newly-created sys::common::io module. Alternatively we could expose the new read_to_end functions to allow people to create their own read_to_end implementations for code they trust.
Rollup merge of #26819 - P1start:ref-suggestion, r=nikomatsakis
The error now looks like this:
```
<anon>:4:9: 4:10 error: use of moved value: `x` [E0382]
<anon>:4 foo(x);
^
<anon>:3:9: 3:10 note: `x` moved here because it has type `Box<i32>`, which is moved by default
<anon>:3 let y = x;
^
<anon>:3:9: 3:10 help: use `ref` to take a reference instead:
<anon>: let ref y = x;
```
Rollup merge of #27028 - Gankro:travis, r=alexcrichton
This has travis build LLVM and rustc up to stage1, but not run any tests. It seems wasteful to have the ultimate might of travis running on every PR just to check for whitespace errors. This is a pure subset of the bootstrap, so it shouldn't ever spuriously break.
`make tidy` still runs first, so we still get \"fast errors\" on bad style. However once make tidy passes, the build will simply keep running to try to make rustc. `tidy` takes ~3 mins to complete, so if your build runs longer you can be confident we've gone on to build LLVM/rustc. In principle this is configured to use ccache (it shows up in the build logs as uploaded/downloaded), but I found no actual performance changes in using it.
Maybe someone at @travis-ci knows what's up with that.
For reference, here is a successful build with ccache enabled: https://travis-ci.org/Gankro/rust/builds/70821237
and one without: https://travis-ci.org/Gankro/rust/builds/70812814
Rollup merge of #27013 - michaelsproul:fix-E0303, r=alexcrichton
A merge in #24523 broke the explanation for E0303. This commit restores the previous version and also removes an erroneous `&` (which had nothing to do with the merge).
Yet another attempt to make the prose on the std crate page
clearer and more informative.
This does a lot of things: tightens up the opening, adds useful links
(including a link to the search bar), offers guidance on how to use
the docs, and expands the prelude docs as a useful newbie entrypoint.
Vincent Bernat [Wed, 15 Jul 2015 21:32:58 +0000 (23:32 +0200)]
doc: add rel=prev/next for links to adjacent sections
This help people using keyboard navigation or with disabilities to
easily browse through pagination. For example, in Vimium, a reader can
do `[[` or `]]` to browse through the pages.
Add specializations of read_to_end for Stdin, TcpStream and File,
allowing them to read into a buffer containing uninitialized data,
rather than pay the cost of zeroing.
Ratchet up travis to build stage1 and our own LLVM.
Tidy is still run first for failing fast on the easy stuff.
To accomplish this we have travis actually persist ccache across builds. This
has LLVM built within 6 minutes, and all of stage1 built within 18.
Caching should work on fresh PRs (cache acquired from the master branch).
Because all we persist is ccache, there is minimal danger of persisting corrupt
build state.
I had to mangle `configure` a bit to make --enable-ccache work when custom
compilers are provide via CC and CXX.
Auto merge of #27015 - frankmcsherry:patch-1, r=steveklabnik
Grammatical update (and passive -> active, but I'm not sure if "Rust" is often used as a subject in the book; feel free to revert that part for style, but keep the subject-verb agreement)
Auto merge of #27002 - IvanUkhov:docblock-pre-code, r=Gankro
The current nonzero side padding of `code` tags is good for legibility in paragraphs and lists; however, it introduces an awkward indentation to `pre` tags. Specifically, when a `pre` tag contains preformatted text with multiple lines, the fist line gets pushed slightly to the right, running the vertical alignment. An example can be seen [here](http://doc.rust-lang.org/std/fmt/#syntax). I propose setting the padding to zero for `code`s contained in `pre`s.
Brian Anderson [Sat, 11 Jul 2015 19:12:19 +0000 (12:12 -0700)]
std: Refining crate docs
Yet another attempt to make the prose on the std crate page
clearer and more informative.
This does a lot of things: tightens up the opening, adds useful links
(including a link to the search bar), offers guidance on how to use
the docs, and expands the prelude docs as a useful newbie entrypoint.
Auto merge of #27006 - ryanp-me:apple-llvm, r=brson
Since Apple LLVM no longer reports which version of LLVM it's based off (starting with 7.0.0), I believe it's time to start checking Apple LLVM versions directly.
The changes in this pull request update the `configure` script to check "Apple LLVM" versions independently if no "based off" version can be found. If a "based off" version is included, however, it will be preferred.
Auto merge of #26993 - michaelwoerister:msvc-debuginfo, r=alexcrichton
This PR will enable RUSTC to generate PDB debuginfo files when targeting the MSVC toolchain. Mind that these are not full featured PDB files -- they just contain line tables, so you can get proper backtraces and step through your code, but variable values can't be inspected. We are just levering (LLVM's current support)[http://clang.llvm.org/docs/MSVCCompatibility.html] for creating Windows debuginfo. When LLVM's support gets better, we should benefit from that too without much effort.
I also wanted to include some kind of auto test with this PR but I could not get the `rmake` tests to work properly when targeting MSVC.
Akos Kiss [Mon, 13 Jul 2015 18:06:04 +0000 (20:06 +0200)]
Fix section of __morestack for aarch64-unknown-linux-gnu
When building for AArch64/Linux, __morestack ends up in the .note.GNU-stack section,
which causes missing references for the linker. By using the func/endfunc macros
from macros.S we get __morestack right to .text (and a bit more on the side).
Auto merge of #26984 - nham:errorck-ignore-long-diag, r=brson
Currently errorck yields bogus `duplicate error code` messages when an error code occurs inside of a long diagnostic message (see https://github.com/rust-lang/rust/pull/26982), because errorck just goes line by line checking for error codes and recording them all.
A simplistic approach to fixing this is just to detect the beginning of a long diagnostic raw string literal (`r##"`) and skip lines until the end of the raw string literal is encountered. I'm not completely confident in this approach, but I think a more robust approach would be more complicated and I wanted to get feedback before pursuing that.
Frank McSherry [Mon, 13 Jul 2015 15:22:08 +0000 (17:22 +0200)]
minor grammatical update
Grammatical update (and passive -> active, but I'm not sure if "Rust" is often used as a subject in the book; feel free to revert that part for style, but keep the subject-verb agreement)
Simon Sapin [Mon, 15 Jun 2015 16:33:21 +0000 (18:33 +0200)]
Implement IndexMut for String and str.
... matching the existing Index impls.
There is no reason not to if String implement DerefMut.
The code removed in `src/librustc/middle/effect.rs` was added in #9750
to prevent things like `s[0] = 0x80` where `s: String`,
but I belive became unnecessary when the Index(Mut) traits were introduced.
Auto merge of #27000 - alexcrichton:semi-after-type, r=cmr
This commit expands the follow set of the `ty` and `path` macro fragments to
include the semicolon token as well. A semicolon is already allowed after these
tokens, so it's currently a little too restrictive to not have a semicolon
allowed. For example:
extern {
fn foo() -> i32; // semicolon after type
}
Auto merge of #27011 - dotdash:issue-26996, r=luqmana
If we match a whole struct or tuple, the "field" for the reassignment
checker will be "None" which means that mutating any field should count
as a reassignment.
Björn Steinbrink [Mon, 13 Jul 2015 11:23:13 +0000 (13:23 +0200)]
Correctly detect reassignments to the interior of matched structs/tuples
If we match a whole struct or tuple, the "field" for the reassignment
checker will be "None" which means that mutating any field should count
as a reassignment.
I'm not entirely satisfied with the placement of the rounding discussion in the docs for the `Div` and `Rem` traits, but I couldn't come up with anywhere better to put it. Suggestions are welcome.
I didn't add any discussion of rounding to the `checked_div` (or rem) or `wrapping_div` documentation because those seem to make it pretty clear that they do the same thing as `Div`.
Auto merge of #26947 - nagisa:unicode-escape-error, r=nrc
Inspired by the now-mysteriously-closed https://github.com/rust-lang/rust/pull/26782.
This PR introduces better error messages when unicode escapes have invalid format (e.g. `\uFFFF`). It also makes rustc always tell the user that escape may not be used in byte-strings and bytes and fixes some spans to not include unecessary characters and include escape backslash in some others.
Auto merge of #26958 - alexcrichton:down-with-thread-dtors, r=brson
TLS tests have been deadlocking on the OSX bots for quite some time now and this
commit is the result of the investigation into what's going on. It turns out
that a value in TLS which is being destroyed (e.g. the destructor is run) can be
reset back to the initial state **while the destructor is running** if TLS is
re-accessed.
To fix this we stop calling drop_in_place on OSX and instead move the data to a
temporary location on the stack.
Alex Crichton [Sun, 12 Jul 2015 22:53:04 +0000 (15:53 -0700)]
syntax: Allow semi tokens after macro ty/path
This commit expands the follow set of the `ty` and `path` macro fragments to
include the semicolon token as well. A semicolon is already allowed after these
tokens, so it's currently a little too restrictive to not have a semicolon
allowed. For example:
extern {
fn foo() -> i32; // semicolon after type
}
Alex Crichton [Sat, 11 Jul 2015 00:46:20 +0000 (17:46 -0700)]
std: Fix a TLS destructor bug on OSX
TLS tests have been deadlocking on the OSX bots for quite some time now and this
commit is the result of the investigation into what's going on. It turns out
that a value in TLS which is being destroyed (e.g. the destructor is run) can be
reset back to the initial state **while the destructor is running** if TLS is
re-accessed.
To fix this we stop calling drop_in_place on OSX and instead move the data to a
temporary location on the stack.
Auto merge of #26895 - jroesch:modernize-typeck-names, r=nikomatsakis
This PR modernizes some names in the type checker. The only remaining snake_case name in ty.rs is `ctxt` which should be resolved by @eddyb's pending refactor. We can bike shed over the names, it would just be nice to bring the type checker inline with modern Rust.
Auto merge of #26965 - bluss:cstring-debug, r=alexcrichton
Use escaped byte string representation for CString Debug
Faithfully represent the contents of the CString and CStr in their Debug
impl, by treating them as byte strings with our default escaping to
ascii representation.
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