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2015-01-08auto merge of #20760 : alexcrichton/rust/rollup, r=alexcrichtonbors-1/+2
2015-01-08rollup merge of #20754: nikomatsakis/int-featureAlex Crichton-0/+1
Conflicts: src/test/compile-fail/borrowck-move-out-of-overloaded-auto-deref.rs src/test/compile-fail/issue-2590.rs src/test/compile-fail/lint-stability.rs src/test/compile-fail/slice-mut-2.rs src/test/compile-fail/std-uncopyable-atomics.rs
2015-01-08Remove warning from the libraries.Huon Wilson-0/+1
This adds the int_uint feature to *every* library, whether or not it needs it.
2015-01-08Improvements to feature stagingBrian Anderson-1/+1
This gets rid of the 'experimental' level, removes the non-staged_api case (i.e. stability levels for out-of-tree crates), and lets the staged_api attributes use 'unstable' and 'deprecated' lints. This makes the transition period to the full feature staging design a bit nicer.
2015-01-08librustc_driver: Add support for loading plugins via command line (fixes #15446)Manish Goregaokar-1/+3
2015-01-08librustc::session : Make DebuggingOpts use the options! macroManish Goregaokar-7/+7
2015-01-07rollup merge of #20723: pnkfelix/feature-gate-box-syntaxAlex Crichton-0/+2
Conflicts: src/compiletest/compiletest.rs src/libcollections/lib.rs src/libserialize/lib.rs src/libsyntax/feature_gate.rs
2015-01-07rollup merge of #20721: japaric/snapAlex Crichton-9/+9
Conflicts: src/libcollections/vec.rs src/libcore/fmt/mod.rs src/librustc/lint/builtin.rs src/librustc/session/config.rs src/librustc_trans/trans/base.rs src/librustc_trans/trans/context.rs src/librustc_trans/trans/type_.rs src/librustc_typeck/check/_match.rs src/librustdoc/html/format.rs src/libsyntax/std_inject.rs src/libsyntax/util/interner.rs src/test/compile-fail/mut-pattern-mismatched.rs
2015-01-08allow box_syntax and unknown features in the rustc_driver crate.Felix S. Klock II-0/+2
2015-01-07Preliminary feature stagingBrian Anderson-1/+21
This partially implements the feature staging described in the [release channel RFC][rc]. It does not yet fully conform to the RFC as written, but does accomplish its goals sufficiently for the 1.0 alpha release. It has three primary user-visible effects: * On the nightly channel, use of unstable APIs generates a warning. * On the beta channel, use of unstable APIs generates a warning. * On the beta channel, use of feature gates generates a warning. Code that does not trigger these warnings is considered 'stable', modulo pre-1.0 bugs. Disabling the warnings for unstable APIs continues to be done in the existing (i.e. old) style, via `#[allow(...)]`, not that specified in the RFC. I deem this marginally acceptable since any code that must do this is not using the stable dialect of Rust. Use of feature gates is itself gated with the new 'unstable_features' lint, on nightly set to 'allow', and on beta 'warn'. The attribute scheme used here corresponds to an older version of the RFC, with the `#[staged_api]` crate attribute toggling the staging behavior of the stability attributes, but the user impact is only in-tree so I'm not concerned about having to make design changes later (and I may ultimately prefer the scheme here after all, with the `#[staged_api]` crate attribute). Since the Rust codebase itself makes use of unstable features the compiler and build system to a midly elaborate dance to allow it to bootstrap while disobeying these lints (which would otherwise be errors because Rust builds with `-D warnings`). This patch includes one significant hack that causes a regression. Because the `format_args!` macro emits calls to unstable APIs it would trigger the lint. I added a hack to the lint to make it not trigger, but this in turn causes arguments to `println!` not to be checked for feature gates. I don't presently understand macro expansion well enough to fix. This is bug #20661. Closes #16678 [rc]: https://github.com/rust-lang/rfcs/blob/master/text/0507-release-channels.md
2015-01-07use slicing sugarJorge Aparicio-9/+9
2015-01-06rollup merge of #20615: aturon/stab-2-threadAlex Crichton-1/+1
This commit takes a first pass at stabilizing `std::thread`: * It removes the `detach` method in favor of two constructors -- `spawn` for detached threads, `scoped` for "scoped" (i.e., must-join) threads. This addresses some of the surprise/frustrating debug sessions with the previous API, in which `spawn` produced a guard that on destruction joined the thread (unless `detach` was called). The reason to have the division in part is that `Send` will soon not imply `'static`, which means that `scoped` thread creation can take a closure over *shared stack data* of the parent thread. On the other hand, this means that the parent must not pop the relevant stack frames while the child thread is running. The `JoinGuard` is used to prevent this from happening by joining on drop (if you have not already explicitly `join`ed.) The APIs around `scoped` are future-proofed for the `Send` changes by taking an additional lifetime parameter. With the current definition of `Send`, this is forced to be `'static`, but when `Send` changes these APIs will gain their full flexibility immediately. Threads that are `spawn`ed, on the other hand, are detached from the start and do not yield an RAII guard. The hope is that, by making `scoped` an explicit opt-in with a very suggestive name, it will be drastically less likely to be caught by a surprising deadlock due to an implicit join at the end of a scope. * The module itself is marked stable. * Existing methods other than `spawn` and `scoped` are marked stable. The migration path is: ```rust Thread::spawn(f).detached() ``` becomes ```rust Thread::spawn(f) ``` while ```rust let res = Thread::spawn(f); res.join() ``` becomes ```rust let res = Thread::scoped(f); res.join() ``` [breaking-change]
2015-01-06Register new snapshotsAlex Crichton-19/+3
Conflicts: src/librbml/lib.rs src/libserialize/json_stage0.rs src/libserialize/serialize_stage0.rs src/libsyntax/ast.rs src/libsyntax/ext/deriving/generic/mod.rs src/libsyntax/parse/token.rs
2015-01-06Fallout from stabilizationAaron Turon-1/+1
2015-01-07Replace full slice notation with index callsNick Cameron-8/+8
2015-01-05rollup merge of #20482: kmcallister/macro-reformAlex Crichton-2/+16
Conflicts: src/libflate/lib.rs src/libstd/lib.rs src/libstd/macros.rs src/libsyntax/feature_gate.rs src/libsyntax/parse/parser.rs src/libsyntax/show_span.rs src/test/auxiliary/macro_crate_test.rs src/test/compile-fail/lint-stability.rs src/test/run-pass/intrinsics-math.rs src/test/run-pass/tcp-connect-timeouts.rs
2015-01-05rollup merge of #20258: sanxiyn/show-span-2Alex Crichton-2/+6
2015-01-05Replace #[phase] with #[plugin] / #[macro_use] / #[no_link]Keegan McAllister-2/+16
2015-01-03remove `Any[Mut]RefExt` traits in favor of `impl Any`Jorge Aparicio-1/+0
2015-01-03rustc_driver: fix falloutJorge Aparicio-0/+1
2015-01-02rollup merge of #20273: alexcrichton/second-pass-commAlex Crichton-1/+1
Conflicts: src/doc/guide.md src/libcollections/bit.rs src/libcollections/btree/node.rs src/libcollections/slice.rs src/libcore/ops.rs src/libcore/prelude.rs src/librand/rand_impls.rs src/librustc/middle/check_match.rs src/librustc/middle/infer/region_inference/mod.rs src/librustc_driver/lib.rs src/librustdoc/test.rs src/libstd/bitflags.rs src/libstd/io/comm_adapters.rs src/libstd/io/mem.rs src/libstd/io/mod.rs src/libstd/io/net/pipe.rs src/libstd/io/net/tcp.rs src/libstd/io/net/udp.rs src/libstd/io/pipe.rs src/libstd/io/process.rs src/libstd/io/stdio.rs src/libstd/io/timer.rs src/libstd/io/util.rs src/libstd/macros.rs src/libstd/os.rs src/libstd/path/posix.rs src/libstd/path/windows.rs src/libstd/prelude/v1.rs src/libstd/rand/mod.rs src/libstd/rand/os.rs src/libstd/sync/barrier.rs src/libstd/sync/condvar.rs src/libstd/sync/future.rs src/libstd/sync/mpsc/mod.rs src/libstd/sync/mpsc/mpsc_queue.rs src/libstd/sync/mpsc/select.rs src/libstd/sync/mpsc/spsc_queue.rs src/libstd/sync/mutex.rs src/libstd/sync/once.rs src/libstd/sync/rwlock.rs src/libstd/sync/semaphore.rs src/libstd/sync/task_pool.rs src/libstd/sys/common/helper_thread.rs src/libstd/sys/unix/process.rs src/libstd/sys/unix/timer.rs src/libstd/sys/windows/c.rs src/libstd/sys/windows/timer.rs src/libstd/sys/windows/tty.rs src/libstd/thread.rs src/libstd/thread_local/mod.rs src/libstd/thread_local/scoped.rs src/libtest/lib.rs src/test/auxiliary/cci_capture_clause.rs src/test/bench/shootout-reverse-complement.rs src/test/bench/shootout-spectralnorm.rs src/test/compile-fail/array-old-syntax-2.rs src/test/compile-fail/bind-by-move-no-guards.rs src/test/compile-fail/builtin-superkinds-self-type.rs src/test/compile-fail/comm-not-freeze-receiver.rs src/test/compile-fail/comm-not-freeze.rs src/test/compile-fail/issue-12041.rs src/test/compile-fail/unsendable-class.rs src/test/run-pass/builtin-superkinds-capabilities-transitive.rs src/test/run-pass/builtin-superkinds-capabilities-xc.rs src/test/run-pass/builtin-superkinds-capabilities.rs src/test/run-pass/builtin-superkinds-self-type.rs src/test/run-pass/capturing-logging.rs src/test/run-pass/closure-bounds-can-capture-chan.rs src/test/run-pass/comm.rs src/test/run-pass/core-run-destroy.rs src/test/run-pass/drop-trait-enum.rs src/test/run-pass/hashmap-memory.rs src/test/run-pass/issue-13494.rs src/test/run-pass/issue-3609.rs src/test/run-pass/issue-4446.rs src/test/run-pass/issue-4448.rs src/test/run-pass/issue-8827.rs src/test/run-pass/issue-9396.rs src/test/run-pass/ivec-tag.rs src/test/run-pass/rust-log-filter.rs src/test/run-pass/send-resource.rs src/test/run-pass/send-type-inference.rs src/test/run-pass/sendable-class.rs src/test/run-pass/spawn-types.rs src/test/run-pass/task-comm-0.rs src/test/run-pass/task-comm-10.rs src/test/run-pass/task-comm-11.rs src/test/run-pass/task-comm-13.rs src/test/run-pass/task-comm-14.rs src/test/run-pass/task-comm-15.rs src/test/run-pass/task-comm-16.rs src/test/run-pass/task-comm-3.rs src/test/run-pass/task-comm-4.rs src/test/run-pass/task-comm-5.rs src/test/run-pass/task-comm-6.rs src/test/run-pass/task-comm-7.rs src/test/run-pass/task-comm-9.rs src/test/run-pass/task-comm-chan-nil.rs src/test/run-pass/task-spawn-move-and-copy.rs src/test/run-pass/task-stderr.rs src/test/run-pass/tcp-accept-stress.rs src/test/run-pass/tcp-connect-timeouts.rs src/test/run-pass/tempfile.rs src/test/run-pass/trait-bounds-in-arc.rs src/test/run-pass/trivial-message.rs src/test/run-pass/unique-send-2.rs src/test/run-pass/unique-send.rs src/test/run-pass/unwind-resource.rs
2015-01-02std: Stabilize the prelude moduleAlex Crichton-0/+2
This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
2014-12-31rustc_driver: unbox closures used in let bindingsJorge Aparicio-4/+4
2014-12-30Fallout from stabilizationAaron Turon-3/+5
2014-12-29std: Second pass stabilization for `comm`Alex Crichton-1/+1
This commit is a second pass stabilization for the `std::comm` module, performing the following actions: * The entire `std::comm` module was moved under `std::sync::mpsc`. This movement reflects that channels are just yet another synchronization primitive, and they don't necessarily deserve a special place outside of the other concurrency primitives that the standard library offers. * The `send` and `recv` methods have all been removed. * The `send_opt` and `recv_opt` methods have been renamed to `send` and `recv`. This means that all send/receive operations return a `Result` now indicating whether the operation was successful or not. * The error type of `send` is now a `SendError` to implement a custom error message and allow for `unwrap()`. The error type contains an `into_inner` method to extract the value. * The error type of `recv` is now `RecvError` for the same reasons as `send`. * The `TryRecvError` and `TrySendError` types have had public reexports removed of their variants and the variant names have been tweaked with enum namespacing rules. * The `Messages` iterator is renamed to `Iter` This functionality is now all `#[stable]`: * `Sender` * `SyncSender` * `Receiver` * `std::sync::mpsc` * `channel` * `sync_channel` * `Iter` * `Sender::send` * `Sender::clone` * `SyncSender::send` * `SyncSender::try_send` * `SyncSender::clone` * `Receiver::recv` * `Receiver::try_recv` * `Receiver::iter` * `SendError` * `RecvError` * `TrySendError::{mod, Full, Disconnected}` * `TryRecvError::{mod, Empty, Disconnected}` * `SendError::into_inner` * `TrySendError::into_inner` This is a breaking change due to the modification of where this module is located, as well as the changing of the semantics of `send` and `recv`. Most programs just need to rename imports of `std::comm` to `std::sync::mpsc` and add calls to `unwrap` after a send or a receive operation. [breaking-change]
2014-12-29std: Stabilize the prelude moduleAlex Crichton-0/+2
This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
2014-12-27Use -Z unstable-options for span debuggerSeo Sanghyeon-1/+5
2014-12-27Add unstable_options methodSeo Sanghyeon-1/+1
2014-12-26s/task/thread/gSteve Klabnik-1/+1
A part of #20038
2014-12-22rollup merge of #19964: pnkfelix/everybody-loops-pprintAlex Crichton-8/+48
Conflicts: src/librustc/session/config.rs src/librustc_driver/lib.rs src/librustc_driver/pretty.rs
2014-12-22Add an unstable `--xpretty _` option to `rustc`. Moved `flowgraph`Felix S. Klock II-1/+12
and `everybody_loops` options to `--xpretty`.
2014-12-22Add `-Z unstable-options` debugging flag, which can then be used toFelix S. Klock II-7/+36
extend the `rustc` command line interface with options that we do not want to commit to making part of the long-term public interface for `rustc`.
2014-12-21Fallout of std::str stabilizationAlex Crichton-13/+15
2014-12-21rollup merge of #19898: Aatch/issue-19684Alex Crichton-1/+1
#16081 fixed an issue where a nested return statement would cause incorrect behaviour due to the inner return writing over the return stack slot that had already been written too. However, the check was very broad and picked many cases that wouldn't ever be affected by this issue. As a result, the number of allocas increased dramatically and therefore stack-size increased. LLVM is not able to remove all of the extraneous allocas. Any code that had multiple return values in a compound expression at the end of a function (including loops) would be hit by the issue. The check now uses a control-flow graph to only consider the case when the inner return is executed conditionally. By itself, this narrowed definition causes #15763 to return, so the control-flow graph is also used to avoid passing the return slot as a destination when the result won't be used. This change allows the stack-size of the main rustc task to be reduced to 8MB from 32MB.
2014-12-20auto merge of #19900 : alexcrichton/rust/compiler-flags, r=cmrbors-56/+63
This commit shuffles around some CLI flags of the compiler to some more stable locations with some renamings. The changes made were: * The `-v` flag has been repurposes as the "verbose" flag. The version flag has been renamed to `-V`. * The `-h` screen has been split into two parts. Most top-level options (not all) show with `-h`, and the remaining options (generally obscure) can be shown with `--help -v` which is a "verbose help screen" * The `-V` flag (version flag now) has lost its argument as it is now requested with `rustc -vV` "verbose version". * The `--emit` option has had its `ir` and `bc` variants renamed to `llvm-ir` and `llvm-bc` to emphasize that they are LLVM's IR/bytecode. * The `--emit` option has grown a new variant, `dep-info`, which subsumes the `--dep-info` CLI argument. The `--dep-info` flag is now deprecated. * The `--parse-only`, `--no-trans`, `--no-analysis`, and `--pretty` flags have moved behind the `-Z` family of flags. * The `--debuginfo` and `--opt-level` flags were moved behind the top-level `-C` flag. * The `--print-file-name` and `--print-crate-name` flags were moved behind one global `--print` flag which now accepts one of `crate-name`, `file-names`, or `sysroot`. This global `--print` flag is intended to serve as a mechanism for learning various metadata about the compiler itself. * The top-level `--pretty` flag was moved to a number of `-Z` options. No warnings are currently enabled to allow tools like Cargo to have time to migrate to the new flags before spraying warnings to all users. cc https://github.com/rust-lang/rust/issues/19051
2014-12-20auto merge of #19511 : eddyb/rust/no-shadow, r=alexcrichtonbors-1/+1
r? @erickt
2014-12-20Split resolve from rustc::middle into rustc_resolve.Eduard Burtescu-0/+1
2014-12-20Remove feature(import_shadowing) from all crates.Eduard Burtescu-1/+1
2014-12-19rustc: Start "stabilizing" some flagsAlex Crichton-56/+63
This commit shuffles around some CLI flags of the compiler to some more stable locations with some renamings. The changes made were: * The `-v` flag has been repurposes as the "verbose" flag. The version flag has been renamed to `-V`. * The `-h` screen has been split into two parts. Most top-level options (not all) show with `-h`, and the remaining options (generally obscure) can be shown with `--help -v` which is a "verbose help screen" * The `-V` flag (version flag now) has lost its argument as it is now requested with `rustc -vV` "verbose version". * The `--emit` option has had its `ir` and `bc` variants renamed to `llvm-ir` and `llvm-bc` to emphasize that they are LLVM's IR/bytecode. * The `--emit` option has grown a new variant, `dep-info`, which subsumes the `--dep-info` CLI argument. The `--dep-info` flag is now deprecated. * The `--parse-only`, `--no-trans`, and `--no-analysis` flags have moved behind the `-Z` family of flags. * The `--debuginfo` and `--opt-level` flags were moved behind the top-level `-C` flag. * The `--print-file-name` and `--print-crate-name` flags were moved behind one global `--print` flag which now accepts one of `crate-name`, `file-names`, or `sysroot`. This global `--print` flag is intended to serve as a mechanism for learning various metadata about the compiler itself. No warnings are currently enabled to allow tools like Cargo to have time to migrate to the new flags before spraying warnings to all users.
2014-12-18Revise std::thread API to join by defaultAaron Turon-7/+3
This commit is part of a series that introduces a `std::thread` API to replace `std::task`. In the new API, `spawn` returns a `JoinGuard`, which by default will join the spawned thread when dropped. It can also be used to join explicitly at any time, returning the thread's result. Alternatively, the spawned thread can be explicitly detached (so no join takes place). As part of this change, Rust processes now terminate when the main thread exits, even if other detached threads are still running, moving Rust closer to standard threading models. This new behavior may break code that was relying on the previously implicit join-all. In addition to the above, the new thread API also offers some built-in support for building blocking abstractions in user space; see the module doc for details. Closes #18000 [breaking-change]
2014-12-18Fallout from new thread APIAaron Turon-6/+9
2014-12-18Only count nested returns when the outer return is reachableJames Miller-1/+1
This narrows the definition of nested returns such that only when the outer return has a chance of being executed (due to the inner return being conditional) do we mark the function as having nested returns. Fixes #19684
2014-12-14Mostly rote conversion of `proc()` to `move||` (and occasionally `Thunk::new`)Niko Matsakis-2/+2
2014-12-13librustc_driver: use unboxed closuresJorge Aparicio-0/+1
2014-12-13Separate borrowck into its own crate and remove dead code as well.Niko Matsakis-1/+2
2014-12-11Register new snapshotsAlex Crichton-1/+1
2014-12-06librustc_trans: remove unnecessary `as_slice` callsJorge Aparicio-2/+2
2014-12-04FIXME(#19497) -- Stop messing around and just give rustc 32MB of stack ↵Niko Matsakis-7/+1
unconditionally. This is prompted by some sort of bug in trans that causes a stack overflow when the modules in trans are made private. (In particular, the overflow can also be avoided by making `controlflow` and `callee` public, but that seems strictly worse than just using more stack.)
2014-12-04Separate the driver into its own crate that uses trans, typeck.Niko Matsakis-0/+547
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