curl's progress meter would otherwise interfere with sudo's password prompt.

In addition, add the -f flag to make sure 4xx status codes are treated as errors.

Fixes rust-lang#11794

Also tweaked a few things.

This allows quasiquoting to insert where clauses.

This commit provides a safe, but unstable interface for the `try` functionality
of running a closure and determining whether it panicked or not.

There are two primary reasons that this function was previously marked `unsafe`:

1. A vanilla version of this function exposes the problem of exception safety by
   allowing a bare try/catch in the language. It is not clear whether this
   concern should be directly tied to `unsafe` in Rust at the API level. At this
   time, however, the bounds on `ffi::try` require the closure to be both
   `'static` and `Send` (mirroring those of `thread::spawn`). It may be possible
   to relax the bounds in the future, but for now it's the level of safety that
   we're willing to commit to.

2. Panicking while panicking will leak resources by not running destructors.
   Because panicking is still controlled by the standard library, safeguards
   remain in place to prevent this from happening.

The new API is now called `catch_panic` and is marked as `#[unstable]` for now.

This commit removes all parsing, resolve, and compiler support for the old and
long-deprecated int/uint types.

Refactored code so that the drop-flag values for initialized
(`DTOR_NEEDED`) versus dropped (`DTOR_DONE`) are given explicit names.

Add `mem::dropped()` (which with `DTOR_DONE == 0` is semantically the
same as `mem::zeroed`, but the point is that it abstracts away from
the particular choice of value for `DTOR_DONE`).

Filling-drop needs to use something other than `ptr::read_and_zero`,
so I added such a function: `ptr::read_and_drop`.  But, libraries
should not use it if they can otherwise avoid it.

Fixes to tests to accommodate filling-drop.

…ile-fail tests.

(I.e. the idea being, lets catch errors in these basic constructs
sometime *before* we start doing the doc tests.)

…ues.

…e PR.

(Reviewed rest of code; did not see other `pub` items that needed such
treatment.)

Driveby: fix typo in comment in ptr.rs.

(That is, added config and debugflag a la check-overflow but for drop
flag sanity-check.)

Remove now-unused import of NoDebugInfo from trans::glue.

This is technically a breaking change as it deprecates and unstables
some previously stable apis that were missed in the last round of
deprecations.

[breaking change]

Now that feature flags are only on nightly, it's good to split this stuff out.

This syntax has been deprecated for quite some time, and there were only a few
remaining uses of it in the codebase anyway.

This PR allows the quote macros to unquote trait items, impl items, where clauses, and paths.

when you perform a clone() call.

Now that support has been removed, all lingering use cases are renamed.

This commit removes compiler support for the `old_impl_check` attribute which
should in theory be entirely removed now. The last remaining use of it in the
standard library has been updated by moving the type parameter on the
`old_io::Acceptor` trait into an associated type. As a result, this is a
breaking change for all current users of the deprecated `old_io::Acceptor`
trait. Code can be migrated by using the `Connection` associated type instead.

[breaking-change]

This attribute has been deprecated in favor of #[should_panic]. This also
updates rustdoc to no longer accept the `should_fail` directive and instead
renames it to `should_panic`.

This commit revises `path` and `os_str` to use blanket impls for `From`
on reference types. This both cuts down on the number of required impls,
and means that you can pass through e.g. `T: AsRef<OsStr>` to
`PathBuf::from` without an intermediate call to `as_ref`.

It also makes a FIXME note for later generalizing the blanket impls for
`AsRef` and `AsMut` to use `Deref`/`DerefMut`, once it is possible to do
so.

Found a few 404s that seemed like simple fixes:

The Result docs use old_io Writer as an example. Fix the link to old_io Writer. There's probably an effort to update the example away from a deprecated api but this was a simple fix.

rustc/plugin was pointing at the old guide and it was a broken link anyways (plugin vs plugins). Point at the book instead.

The main page of the API docs referenced c_{str,vec}. Looks like these were deleted in 25d5a3a. Point at ffi docs instead.

semantics that tests the *interface* of trait objects, rather
than what they close over.

This commit removes the extra deprecation warnings and support for the old
`phase` and `plugin` attributes for loading plugins.

This syntax has been renamed to `-l static=foo` some time ago.

Now that `<[_]>::split` is an inherent method, it will trump `BufRead::split`
when `BufRead` is in scope, so there is no longer a conflict. As a result,
calling `slice.split()` will probably always give you precisely what you want!

Closes rust-lang#22608

Marks as `#[stable}`:

* `ok_or`
* `ok_or_else`
* `iter_mut`
* `cloned`

Similarly to `IteratorExt::cloned`, the `cloned` method is pared down to
work only on `Option<&T>`. Thus, this is a:

[breaking-change]

…lt_with

This allows `Wrapping<T>` to be used in `assert_eq!`, for example.

RFC pending, but this is the patch that does it.

Totally untested. Likely needs some removed imports. std::collections docs should also be updated to provide better examples.

Closes rust-lang#23508

Windows gets quite unhappy when a thread fails while the main thread is exiting,
frequently leading to process deadlock. This has been causing quite a few
deadlocks on the windows bots recently. The child threads are presumably failing
because the `println!` is failing due to the main thread being shut down.

 Closes rust-lang#22608

…tring, r=alexcrichton

 closes rust-lang#23620

This PR patches the issue mentioned in rust-lang#23620, but there is also an ICE for invalid escape sequences in byte literals. This is due to the fact that the `scan_byte` function returns ` token::intern(\"??\") ` for invalid bytes, resulting in an ICE later on. Is there a reason for this behavior? Shouldn't `scan_byte` fail when it encounters an invalid byte?

And I noticed a small inconsistency in the documentation. According to the formal byte literal definition in http://doc.rust-lang.org/reference.html#byte-and-byte-string-literals , a byte string literal contains `string_body *`, but according to the text (and the behavior of the lexer) it should not accept unicode escape sequences. Hence it should be replaced by `byte_body *`. If this is valid, I can add this fix to this PR.

 This PR introduces a `Reflect` marker trait which is a supertrait of `Any`. The idea is that `Reflect` is defined for all concrete types, but is not defined for type parameters unless there is a `T:Reflect` bound. This is intended to preserve the parametricity property. This allows the `Any` interface to be stabilized without committing us to unbounded reflection that is not easily detectable by the caller.

The implementation of `Reflect` relies on an experimental variant of OIBIT. This variant behaves differently for objects, since it requires that all types exposed as part of the object's *interface* are `Reflect`, but isn't concerned about other types that may be closed over. In other words, you don't have to write `Foo+Reflect` in order for `Foo: Reflect` to hold (where `Foo` is a trait).

Given that `Any` is slated to stabilization and hence that we are committed to some form of reflection, the goal of this PR is to leave our options open with respect to parametricity. I see the options for full stabilization as follows (I think an RFC would be an appropriate way to confirm whichever of these three routes we take):

1. We make `Reflect` a lang-item.
2. We stabilize some version of the OIBIT variation I implemented as a general mechanism that may be appropriate for other use cases.
3. We give up on preserving parametricity here and just have `impl<T> Reflect for T` instead. In that case, `Reflect` is a harmless but not especially useful trait going forward.

cc @aturon
cc @alexcrichton
cc @glaebhoerl (this is more-or-less your proposal, as I understood it)
cc @reem (this is more-or-less what we discussed on IRC at some point)
cc @flaper87 (vaguely pertains to OIBIT)

Closes rust-lang#22608

Replace zeroing-on-drop with filling-on-drop.

This is meant to set the stage for removing *all* zeroing and filling (on drop) in the future.

Note that the code is meant to be entirely abstract with respect to the particular values used for the drop flags: the final commit demonstrates how to go from zeroing-on-drop to filling-on-drop by changing the value of three constants (in two files).

See further discussion on the internals thread:
  http://internals.rust-lang.org/t/attention-hackers-filling-drop/1715/11

[breaking-change] especially for structs / enums using `#[unsafe_no_drop_flag]`.

…ring

closes rust-lang#23620

This PR patches the issue mentioned in rust-lang#23620, but there is also an ICE for invalid escape sequences in byte literals. This is due to the fact that the `scan_byte` function returns ` token::intern("??") ` for invalid bytes, resulting in an ICE later on. Is there a reason for this behavior? Shouldn't `scan_byte` fail when it encounters an invalid byte?

And I noticed a small inconsistency in the documentation. According to the formal byte literal definition in http://doc.rust-lang.org/reference.html#byte-and-byte-string-literals , a byte string literal contains `string_body *`, but according to the text (and the behavior of the lexer) it should not accept unicode escape sequences. Hence it should be replaced by `byte_body *`. If this is valid, I can add this fix to this PR.

This commit provides a safe, but unstable interface for the `try` functionality
of running a closure and determining whether it panicked or not.

There are two primary reasons that this function was previously marked `unsafe`:

1. A vanilla version of this function exposes the problem of exception safety by
   allowing a bare try/catch in the language. It is not clear whether this
   concern should be directly tied to `unsafe` in Rust at the API level. At this
   time, however, the bounds on `ffi::try` require the closure to be both
   `'static` and `Send` (mirroring those of `thread::spawn`). It may be possible
   to relax the bounds in the future, but for now it's the level of safety that
   we're willing to commit to.

2. Panicking while panicking will leak resources by not running destructors.
   Because panicking is still controlled by the standard library, safeguards
   remain in place to prevent this from happening.

The new API is now called `catch_panic` and is marked as `#[unstable]` for now.

r? @aturon

…ing-syntax, r=aturon

 This syntax has been deprecated for quite some time, and there were only a few
remaining uses of it in the codebase anyway.

This PR introduces a `Reflect` marker trait which is a supertrait of `Any`. The idea is that `Reflect` is defined for all concrete types, but is not defined for type parameters unless there is a `T:Reflect` bound. This is intended to preserve the parametricity property. This allows the `Any` interface to be stabilized without committing us to unbounded reflection that is not easily detectable by the caller.

The implementation of `Reflect` relies on an experimental variant of OIBIT. This variant behaves differently for objects, since it requires that all types exposed as part of the object's *interface* are `Reflect`, but isn't concerned about other types that may be closed over. In other words, you don't have to write `Foo+Reflect` in order for `Foo: Reflect` to hold (where `Foo` is a trait).

Given that `Any` is slated to stabilization and hence that we are committed to some form of reflection, the goal of this PR is to leave our options open with respect to parametricity. I see the options for full stabilization as follows (I think an RFC would be an appropriate way to confirm whichever of these three routes we take):

1. We make `Reflect` a lang-item.
2. We stabilize some version of the OIBIT variation I implemented as a general mechanism that may be appropriate for other use cases.
3. We give up on preserving parametricity here and just have `impl<T> Reflect for T` instead. In that case, `Reflect` is a harmless but not especially useful trait going forward.

cc @aturon
cc @alexcrichton
cc @glaebhoerl (this is more-or-less your proposal, as I understood it)
cc @reem (this is more-or-less what we discussed on IRC at some point)
cc @flaper87 (vaguely pertains to OIBIT)

Now that feature flags are only on nightly, it's good to split this stuff out.

This is technically a breaking change as it deprecates and unstables some previously stable apis that were missed in the last round of deprecations.

[breaking change]

r? @alexcrichton this should allow `make check` to run when `./configure`d for iOS cross-compilation

Found a few 404s that seemed like simple fixes:

In footer.inc, certain 404 pages were 404ing on the request to jquery.js and playpen.js. This is easily demonstrated by visiting http://doc.rust-lang.org/foo then http://doc.rust-lang.org/foo/bar. The latter 404s, looking for foo/jquery.js.

The Result docs use old_io Writer as an example. Fix the link to old_io Writer. There's probably an effort to update the example away from a deprecated api but this was a simple fix.

rustc/plugin was pointing at the old guide and it was a broken link anyways (plugin vs plugins). Point at the book instead.

The main page of the API docs referenced c_{str,vec}. Looks like these were deleted in 25d5a3a. Point at ffi docs instead.

…ng-syntax

This syntax has been deprecated for quite some time, and there were only a few
remaining uses of it in the codebase anyway.

Adding more information about the behavior of Arc/Rc when you perform a clone() call.

Was reading the 'Looping' section of the book and was puzzled why the last example uses `0u32..10` when the others don't.  Tried it out without and it seems to work, so I figured it should just be `0..10`.  If there is a reason it needs to be `0u32..10` it should be explained in the text (I'd offer to do it but I have no idea).

r? @steveklabnik

The first sentence was not compatible with the second.

This attribute has been deprecated in favor of #[should_panic]. This also
updates rustdoc to no longer accept the `should_fail` directive and instead
renames it to `should_panic`.

This commit revises `path` and `os_str` to use blanket impls for `From`
on reference types. This both cuts down on the number of required impls,
and means that you can pass through e.g. `T: AsRef<OsStr>` to
`PathBuf::from` without an intermediate call to `as_ref`.

It also makes a FIXME note for later generalizing the blanket impls for
`AsRef` and `AsMut` to use `Deref`/`DerefMut`, once it is possible to do
so.

This commit removes the extra deprecation warnings and support for the old
`phase` and `plugin` attributes for loading plugins.

This syntax has been renamed to `-l static=foo` some time ago.

Now that `<[_]>::split` is an inherent method, it will trump `BufRead::split`
when `BufRead` is in scope, so there is no longer a conflict. As a result,
calling `slice.split()` will probably always give you precisely what you want!

Marks as `#[stable}`:

* `ok_or`
* `ok_or_else`
* `iter_mut`
* `cloned`

Similarly to `IteratorExt::cloned`, the `cloned` method is pared down to
work only on `Option<&T>`. Thus, this is a:

[breaking-change]

r? @alexcrichton

Windows gets quite unhappy when a thread fails while the main thread is exiting,
frequently leading to process deadlock. This has been causing quite a few
deadlocks on the windows bots recently. The child threads are presumably failing
because the `println!` is failing due to the main thread being shut down.

r? @alexcrichton

This allows `Wrapping<T>` to be used in `assert_eq!`, for example.

One of the tests (compile-fail/xc-private-method.rs) fails, but I can hardly imagine it is related to this change. I would also like to add a tests to ensure that `assert_eq!` compiles and keeps working in the future for `Wrapped<T>` values, but there appear to be no tests in libcore. What would be a good place to add such a test?

Conflicts:
	src/libcollections/vec.rs

Conflicts:
	src/librustc/middle/ty.rs
	src/librustc_trans/trans/adt.rs
	src/librustc_typeck/check/mod.rs
	src/libserialize/json.rs
	src/test/run-pass/spawn-fn.rs

Conflicts:
	src/libsyntax/feature_gate.rs

This commit removes parser support for `extern crate "foo" as bar` as the
renamed crate is now required to be an identifier. Additionally this commit
enables hard errors on crate names that contain hyphens in them, they must now
solely contain alphanumeric characters or underscores.

If the crate name is inferred from the file name, however, the file name
`foo-bar.rs` will have the crate name inferred as `foo_bar`. If a binary is
being emitted it will have the name `foo-bar` and a library will have the name
`libfoo_bar.rlib`.

This commit is a breaking change for a number of reasons:

* Old syntax is being removed. This was previously only issuing warnings.
* The output for the compiler when input is received on stdin is now `rust_out`
  instead of `rust-out`.
* The crate name for a crate in the file `foo-bar.rs` is now `foo_bar` which can
  affect infrastructure such as logging.

[breaking-change]

Conflicts:
	src/libsyntax/parse/parser.rs

combine normalization with this check so that we also skip the
default method if normalization fails. Fixes rust-lang#23485.

Closes rust-lang#22608