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command line
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plugins
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This warning has been around in the compiler for quite some time now, but the
real place for a warning like this, if it should exist, is in Cargo, not in the
compiler itself. It's a first-class feature of Cargo that multiple versions of a
crate can be compiled into the same executable, and we shouldn't be warning
about our first-class features.
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Instead of copy-pasting the whole macro_rules! item from the original .rs file,
we serialize a separate name, attributes list, and body, the latter as
pretty-printed TTs. The compilation of macro_rules! macros is decoupled
somewhat from the expansion of macros in item position.
This filters out comments, and facilitates selective imports.
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This commit adds support for the compiler to distinguish between different forms
of lookup paths in the compiler itself. Issue #19767 has some background on this
topic, as well as some sample bugs which can occur if these lookup paths are not
separated.
This commits extends the existing command line flag `-L` with the same trailing
syntax as the `-l` flag. Each argument to `-L` can now have a trailing `:all`,
`:native`, `:crate`, or `:dependency`. This suffix indicates what form of lookup
path the compiler should add the argument to. The `dependency` lookup path is
used when looking up crate dependencies, the `crate` lookup path is used when
looking for immediate dependencies (`extern crate` statements), and the `native`
lookup path is used for probing for native libraries to insert into rlibs. Paths
with `all` are used for all of these purposes (the default).
The default compiler lookup path (the rustlib libdir) is by default added to all
of these paths. Additionally, the `RUST_PATH` lookup path is added to all of
these paths.
Closes #19767
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Remove most of the public reexports mentioned in #19253
These are all leftovers from the enum namespacing transition
In particular:
* src/libstd/num/strconv.rs
* ExponentFormat
* SignificantDigits
* SignFormat
* src/libstd/path/windows.rs
* PathPrefix
* src/libstd/sys/windows/timer.rs
* Req
* src/libcollections/str.rs
* MaybeOwned
* src/libstd/collections/hash/map.rs
* Entry
* src/libstd/collections/hash/table.rs
* BucketState
* src/libstd/dynamic_lib.rs
* Rtld
* src/libstd/io/net/ip.rs
* IpAddr
* src/libstd/os.rs
* MemoryMapKind
* MapOption
* MapError
* src/libstd/sys/common/net.rs
* SocketStatus
* InAddr
* src/libstd/sys/unix/timer.rs
* Req
[breaking-change]
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This change makes the compiler no longer infer whether types (structures
and enumerations) implement the `Copy` trait (and thus are implicitly
copyable). Rather, you must implement `Copy` yourself via `impl Copy for
MyType {}`.
A new warning has been added, `missing_copy_implementations`, to warn
you if a non-generic public type has been added that could have
implemented `Copy` but didn't.
For convenience, you may *temporarily* opt out of this behavior by using
`#![feature(opt_out_copy)]`. Note though that this feature gate will never be
accepted and will be removed by the time that 1.0 is released, so you should
transition your code away from using it.
This breaks code like:
#[deriving(Show)]
struct Point2D {
x: int,
y: int,
}
fn main() {
let mypoint = Point2D {
x: 1,
y: 1,
};
let otherpoint = mypoint;
println!("{}{}", mypoint, otherpoint);
}
Change this code to:
#[deriving(Show)]
struct Point2D {
x: int,
y: int,
}
impl Copy for Point2D {}
fn main() {
let mypoint = Point2D {
x: 1,
y: 1,
};
let otherpoint = mypoint;
println!("{}{}", mypoint, otherpoint);
}
This is the backwards-incompatible part of #13231.
Part of RFC #3.
[breaking-change]
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memory usage significantly and opens opportunities for more parallel compilation.
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Hello,
`dylib` [seems][1] to be no longer an option for the `kind` key of the `link` attribute.
UPDATE: It should be the other way around: It [seems][1] `dylib` has been lost as a possible variant of the `kind` key of the `link` attribute. See the comment below.
Regards,
Ivan
[1]: https://github.com/rust-lang/rust/blob/8f8753878644b0bfb38d24781edb9ef2028730f2/src/librustc/metadata/creader.rs#L237
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This commit handles the fallout from deprecating `_with` and `_equiv` methods.
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Removes all target-specific knowledge from rustc. Some targets have changed
during this, but none of these should be very visible outside of
cross-compilation. The changes make our targets more consistent.
iX86-unknown-linux-gnu is now only available as i686-unknown-linux-gnu. We
used to accept any value of X greater than 1. i686 was released in 1995, and
should encompass the bare minimum of what Rust supports on x86 CPUs.
The only two windows targets are now i686-pc-windows-gnu and
x86_64-pc-windows-gnu.
The iOS target has been renamed from arm-apple-ios to arm-apple-darwin.
A complete list of the targets we accept now:
arm-apple-darwin
arm-linux-androideabi
arm-unknown-linux-gnueabi
arm-unknown-linux-gnueabihf
i686-apple-darwin
i686-pc-windows-gnu
i686-unknown-freebsd
i686-unknown-linux-gnu
mips-unknown-linux-gnu
mipsel-unknown-linux-gnu
x86_64-apple-darwin
x86_64-unknown-freebsd
x86_64-unknown-linux-gnu
x86_64-pc-windows-gnu
Closes #16093
[breaking-change]
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* Moves multi-collection files into their own directory, and splits them into seperate files
* Changes exports so that each collection has its own module
* Adds underscores to public modules and filenames to match standard naming conventions
(that is, treemap::{TreeMap, TreeSet} => tree_map::TreeMap, tree_set::TreeSet)
* Renames PriorityQueue to BinaryHeap
* Renames SmallIntMap to VecMap
* Miscellanious fallout fixes
[breaking-change]
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- The signature of the `*_equiv` methods of `HashMap` and similar structures
have changed, and now require one less level of indirection. Change your code
from:
```
hashmap.find_equiv(&"Hello");
hashmap.find_equiv(&&[0u8, 1, 2]);
```
to:
```
hashmap.find_equiv("Hello");
hashmap.find_equiv(&[0u8, 1, 2]);
```
- The generic parameter `T` of the `Hasher::hash<T>` method have become
`Sized?`. Downstream code must add `Sized?` to that method in their
implementations. For example:
```
impl Hasher<FnvState> for FnvHasher {
fn hash<T: Hash<FnvState>>(&self, t: &T) -> u64 { /* .. */ }
}
```
must be changed to:
```
impl Hasher<FnvState> for FnvHasher {
fn hash<Sized? T: Hash<FnvState>>(&self, t: &T) -> u64 { /* .. */ }
// ^^^^^^
}
```
[breaking-change]
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This is an implementation of the rustc bits of [RFC 403][rfc]. This adds a new
flag to the compiler, `-l`, as well as tweaking the `include!` macro (and
related source-centric macros).
The compiler's new `-l` flag is used to link libraries in from the command line.
This flag stacks with `#[link]` directives already found in the program. The
purpose of this flag, also stated in the RFC, is to ease linking against native
libraries which have wildly different requirements across platforms and even
within distributions of one platform. This flag accepts a string of the form
`NAME[:KIND]` where `KIND` is optional or one of dylib, static, or framework.
This is roughly equivalent to if the equivalent `#[link]` directive were just
written in the program.
The `include!` macro has been modified to recursively expand macros to allow
usage of `concat!` as an argument, for example. The use case spelled out in RFC
403 was for `env!` to be used as well to include compile-time generated files.
The macro also received a bit of tweaking to allow it to expand to either an
expression or a series of items, depending on what context it's used in.
[rfc]: https://github.com/rust-lang/rfcs/pull/403
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https://github.com/rust-lang/rfcs/pull/221
The current terminology of "task failure" often causes problems when
writing or speaking about code. You often want to talk about the
possibility of an operation that returns a Result "failing", but cannot
because of the ambiguity with task failure. Instead, you have to speak
of "the failing case" or "when the operation does not succeed" or other
circumlocutions.
Likewise, we use a "Failure" header in rustdoc to describe when
operations may fail the task, but it would often be helpful to separate
out a section describing the "Err-producing" case.
We have been steadily moving away from task failure and toward Result as
an error-handling mechanism, so we should optimize our terminology
accordingly: Result-producing functions should be easy to describe.
To update your code, rename any call to `fail!` to `panic!` instead.
Assuming you have not created your own macro named `panic!`, this
will work on UNIX based systems:
grep -lZR 'fail!' . | xargs -0 -l sed -i -e 's/fail!/panic!/g'
You can of course also do this by hand.
[breaking-change]
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When checking for an existing crate, compare against the `crate_metadata::name` field, which is the crate name which was requested during resolution, rather than the result of the `crate_metadata::name()` method, which is the crate name within the crate metadata, as these may not match when using the --extern option to `rustc`.
This fixes spurious "multiple crate version" warnings under the following scenario:
- The crate `foo`, is referenced multiple times
- `--extern foo=./path/to/libbar.rlib` is specified to rustc
- The internal crate name of `libbar.rlib` is not `foo`
The behavior surrounding `Context::should_match_name` and the comments in `loader.rs` both lead me to believe that this scenario is intended to work.
Fixes #17186
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When checking for an existing crate, compare against the
`crate_metadata::name` field, which is the crate name which
was requested during resolution, rather than the result of the
`crate_metadata::name()` method, which is the crate name within
the crate metadata, as these may not match when using the --extern
option to `rustc`.
This fixes spurious "multiple crate version" warnings under the
following scenario:
- The crate `foo`, is referenced multiple times
- `--extern foo=./path/to/libbar.rlib` is specified to rustc
- The internal crate name of `libbar.rlib` is not `foo`
The behavior surrounding `Context::should_match_name` and the
comments in `loader.rs` both lead me to believe that this scenario
is intended to work.
Fixes #17186
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Crates that are resolved normally have their path canonicalized and all
symlinks resolved. This does currently not happen for paths specified
using the --extern option to rustc, which can lead to rustc thinking
that it encountered two different versions of a crate, when it's
actually the same version found through different paths.
To fix this, we must store the canonical path for crates found via
--extern and also use the canonical path when comparing paths.
Fixes #16496
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The right hand side of the comparison in these checks are values of type
Option<&Path> which are normalized versions of the left-hand side, so they're
not guaranteed to be byte-for-byte equivalent even though they're the same path.
For this reasons, the command line arguments are promoted to paths for
comparison of equality.
This fixes a bug on windows where if a library was specified with --extern it
would then be picked up twice because it was not considered to have been
previously registered.
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If a plugin registrar is available, the library must be found in dylib form, not
just in rlib form.
Closes #15475
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[breaking-change]
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