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This commit starts passing the `--whole-archive` flag (`-force_load` on OSX) to
the linker when linking rlibs into dylibs. The primary purpose of this commit is
to ensure that the linker doesn't strip out objects from an archive when
creating a dynamic library. Information on how this can go wrong can be found in
issues #14344 and #25185.
The unfortunate part about passing this flag to the linker is that we have to
preprocess the rlib to remove the metadata and compressed bytecode found within.
This means that creating a dylib will now take longer to link as we've got to
copy around the input rlibs to a temporary location, modify them, and then
invoke the linker. This isn't done for executables, however, so the "hello
world" compile time is not affected.
This fix was instigated because of the previous commit where rlibs may not
contain multiple object files instead of one due to codegen units being greater
than one. That change prevented the main distribution from being compiled with
more than one codegen-unit and this commit fixes that.
Closes #14344
Closes #25185
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This commit shards the broad `core` feature of the libcore library into finer
grained features. This split groups together similar APIs and enables tracking
each API separately, giving a better sense of where each feature is within the
stabilization process.
A few minor APIs were deprecated along the way:
* Iterator::reverse_in_place
* marker::NoCopy
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Still some references left to this old term, I've updated them to say boxes.
Related to #25851
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Helps prevent mixed content warnings if accessing docs over HTTPS.
Closes #25459
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An automated script was run against the `.rs` and `.md` files,
subsituting every occurrence of `task` with `thread`. In the `.rs`
files, only the texts in the comment blocks were affected.
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`Fn` traits are considered fundamental, along with `Box` (though that is
mostly for show; the real type is `~T` in the compiler).
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(Reviewed rest of code; did not see other `pub` items that needed such
treatment.)
Driveby: fix typo in comment in ptr.rs.
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When this attribute is applied to a function, its return value gets the
noalias attribute, which is how you tell LLVM that the function returns
a "new" pointer that doesn't alias anything accessible to the caller,
i.e. it acts like a memory allocator.
Plain malloc doesn't need this attribute because LLVM already knows
about malloc and adds the attribute itself.
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This commit deprecates the majority of std::old_io::fs in favor of std::fs and
its new functionality. Some functions remain non-deprecated but are now behind a
feature gate called `old_fs`. These functions will be deprecated once
suitable replacements have been implemented.
The compiler has been migrated to new `std::fs` and `std::path` APIs where
appropriate as part of this change.
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This is the kind of change that one is expected to need to make to
accommodate overloaded-`box`.
----
Note that this is not *all* of the changes necessary to accommodate
Issue 22181. It is merely the subset of those cases where there was
already a let-binding in place that made it easy to add the necesasry
type ascription.
(For unnamed intermediate `Box` values, one must go down a different
route; `Box::new` is the option that maximizes portability, but has
potential inefficiency depending on whether the call is inlined.)
----
There is one place worth note, `run-pass/coerce-match.rs`, where I
used an ugly form of `Box<_>` type ascription where I would have
preferred to use `Box::new` to accommodate overloaded-`box`. I
deliberately did not use `Box::new` here, because that is already done
in coerce-match-calls.rs.
----
Precursor for overloaded-`box` and placement-`in`; see Issue 22181.
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Specifically, the following actions were taken:
* The `copy_memory` and `copy_nonoverlapping_memory` functions
to drop the `_memory` suffix (as it's implied by the functionality). Both
functions are now marked as `#[stable]`.
* The `set_memory` function was renamed to `write_bytes` and is now stable.
* The `zero_memory` function is now deprecated in favor of `write_bytes`
directly.
* The `Unique` pointer type is now behind its own feature gate called `unique`
to facilitate future stabilization.
* All type parameters now are `T: ?Sized` wherever possible and new clauses were
added to the `offset` functions to require that the type is sized.
[breaking-change]
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This commit is an implementation of [RFC 823][rfc] which is another pass over
the `std::hash` module for stabilization. The contents of the module were not
entirely marked stable, but some portions which remained quite similar to the
previous incarnation are now marked `#[stable]`. Specifically:
[rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0823-hash-simplification.md
* `std::hash` is now stable (the name)
* `Hash` is now stable
* `Hash::hash` is now stable
* `Hasher` is now stable
* `SipHasher` is now stable
* `SipHasher::new` and `new_with_keys` are now stable
* `Hasher for SipHasher` is now stable
* Many `Hash` implementations are now stable
All other portions of the `hash` module remain `#[unstable]` as they are less
commonly used and were recently redesigned.
This commit is a breaking change due to the modifications to the `std::hash` API
and more details can be found on the [RFC][rfc].
Closes #22467
[breaking-change]
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See RFC 320, "Non-zeroing dynamic drops."
Fix #22173
[breaking-change]
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Fixes #21833.
[breaking-change]
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Fixes #16803.
Fixes #14342.
Fixes half of #21827 -- slice syntax is still broken.
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Also added test for it.
Fixes #21928
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Conflicts:
src/liballoc/lib.rs
src/libcore/ops.rs
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Also some tidying up of a bunch of crate attributes
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paren sugar is legal.
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Conflicts:
mk/tests.mk
src/liballoc/arc.rs
src/liballoc/boxed.rs
src/liballoc/rc.rs
src/libcollections/bit.rs
src/libcollections/btree/map.rs
src/libcollections/btree/set.rs
src/libcollections/dlist.rs
src/libcollections/ring_buf.rs
src/libcollections/slice.rs
src/libcollections/str.rs
src/libcollections/string.rs
src/libcollections/vec.rs
src/libcollections/vec_map.rs
src/libcore/any.rs
src/libcore/array.rs
src/libcore/borrow.rs
src/libcore/error.rs
src/libcore/fmt/mod.rs
src/libcore/iter.rs
src/libcore/marker.rs
src/libcore/ops.rs
src/libcore/result.rs
src/libcore/slice.rs
src/libcore/str/mod.rs
src/libregex/lib.rs
src/libregex/re.rs
src/librustc/lint/builtin.rs
src/libstd/collections/hash/map.rs
src/libstd/collections/hash/set.rs
src/libstd/sync/mpsc/mod.rs
src/libstd/sync/mutex.rs
src/libstd/sync/poison.rs
src/libstd/sync/rwlock.rs
src/libsyntax/feature_gate.rs
src/libsyntax/test.rs
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* `core` - for the core crate
* `hash` - hashing
* `io` - io
* `path` - path
* `alloc` - alloc crate
* `rand` - rand crate
* `collections` - collections crate
* `std_misc` - other parts of std
* `test` - test crate
* `rustc_private` - everything else
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Conflicts:
src/liballoc/boxed.rs
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Previously test was disabled due to `#[cfg(test)]` before `mod boxed`.
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closes #20953
closes #21361
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Lets them build with the -dev, -nightly, or snapshot compiler
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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
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This adds the int_uint feature to *every* library, whether or not it
needs it.
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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.
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Conflicts:
src/compiletest/compiletest.rs
src/libcollections/lib.rs
src/libserialize/lib.rs
src/libsyntax/feature_gate.rs
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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 do 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
Next steps are to disable the existing out-of-tree behavior for stability attributes, and convert the remaining system to be feature-based per the RFC. During the first beta cycle we will set these lints to 'forbid'.
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To avoid using the feauture, change uses of `box <expr>` to
`Box::new(<expr>)` alternative, as noted by the feature gate message.
(Note that box patterns have no analogous trivial replacement, at
least not in general; you need to revise the code to do a partial
match, deref, and then the rest of the match.)
[breaking-change]
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