This was always a weird feature, and isn't being used in the compiler.
Static assertions should be done better than this.
Fixes#13951Fixes#23008Fixes#6676
This is behind a feature gate, but that's still a
[breaking-change]
(It's not entirely clear to me that this should or shouldn't have an RFC, but if it does, I'm fine blocking on such a thing.)
The API documentation is not explicit enough that because `try!` returns
`Err` early for you, you can only use it in functions that return
`Result`. The book mentions this, but if you come across `try!` outside
of the book and look it up in the docs, this restriction on the return
type of the function is not particularly clear.
This was always a weird feature, and isn't being used in the compiler.
Static assertions should be done better than this.
This implements RFC #1096.
Fixes#13951Fixes#23008Fixes#6676
This is behind a feature gate, but that's still a
[breaking-change]
This was causing `rustdoc` to interpret the part starting with
`(A.) ...` as a code block based on its four-space indentation,
which then was treated by `rustdoc` as a *Rust* code snippet,
and thus was attempting (and failing) to parse my english as
Rust code. Thus causing the compiler-docs build to fail.
Independently, we should probably change `rustdoc` to not interpret
four-space indents as code that needs to be tested; it seems too
perilous to me at least.
(But the formatting here needed to be changed either way.)
cc Issue #25699.
These are implemented in asm, they're just not inlined.
Open questions are:
* Should I just inline them? They're.. big, but it seems as though this needs violates the #[inline(always)] gaurantees the others make.
* Does something (llvm?) provide these as intrinsics? The structure of this code suggests that we could be hoisting off something else, instead of flagrantly ignoring it like we do for power and mips.
Bug fixes for configure on FreeBSD:
- Don't ban using gcc; newer versions can be installed and other checks should enforce its suitability.
- Don't force Rust to link itself with /usr/local/lib{,gcc4[46]}, which causes builds to fail if Rust is already installed. I've not been able to find an use case where this is actually necessary.
The compiler already has special support for fixing up verbatim paths with disks
on Windows to something that can be correctly passed down to gcc, and this
commit adds support for verbatim UNC paths as well.
Closes#25505
GDB and LLDB pretty printers have some common functionality and also access some common information, such as the layout of standard library types. So far, this information has been duplicated in the two pretty printing python modules. This PR introduces a common module used by both debuggers.
This PR also implements proper rendering of `String` and `&str` values in LLDB.
rustdoc: Tweak css of function where clauses
Method where clauses are put indented on a new line, do the same tweak
to free functions, which makes it cleaner and easier to read.
This takes the cases from `InvalidInput` where a data format error
was encountered. This is different from the documented semantics
of `InvalidInput`, which more likely indicate a programming error.
Fixesrust-lang/rfcs#906
This commit adds a ./configure option called `--disable-elf-tls` which disables
ELF based TLS (that which is communicated to LLVM) on platforms which already
support it. OSX 10.6 does not support this form of TLS, and some users of Rust
need to target 10.6 and are unable to do so due to the usage of TLS. The
standard library will continue to use ELF based TLS on OSX by default (as the
officially supported platform is 10.7+), but this adds an option to compile the
standard library in a way that is compatible with 10.6.
Closes#25342
Mark Arc function get_mut and method make_unique unsafe
This is a temporary mitigation for issue #24880 which points out that
these functions are racy in a particular situation where weak pointers
exist.
To mitigate this, mark the functions unsafe until this can be fixed or
another decision is made.
The `HashMap` and `HashSet` iterators use `RawTable::first_bucket_raw` which is generic and will get inlined cross-crate.
However, `first_bucket_raw` calls `calculate_offsets` and the call doesn't get inlined, despite being a simple function.
This missing `#[inline]` results in `hash_table::calculate_offsets` showing up at the top of a callgrind profile with 3 million calls (for the testcase in #25916).
This is a temporary mitigation for issue #24880 which points out that
these functions are racy in a particular situation where weak pointers
exist.
To mitigate this, mark the functions unsafe until this can be fixed or
another decision is made.
This is a breaking change to unstable API, because the new version
requires an `unsafe` block. Review carefully if weak pointers may race
for any uses of this API and consider abandoning it.
[breaking-change]
GDB and LLDB pretty printers have some common functionality
and also access some common information, such as the layout of
standard library types. So far, this information has been
duplicated in the two pretty printing python modules. This
commit introduces a common module used by both debuggers.
The E0397 explanation, as I've written it, isn't really an explanation, but I'm not sure what to put here. I will happily take suggestions.
Partially addresses https://github.com/rust-lang/rust/issues/25851
This adds an example from mem::swap, and provides some suggested uses of this
function.
This is my attempt to summarize the answers to a question I asked on reddit http://www.reddit.com/r/rust/comments/37jcul/what_is_forget_for/ and add the answers to the documentation so that no one else has to google or ask the question again.
This commit implements a number of standard traits for the standard library's
process I/O handles. The `FromRaw{Fd,Handle}` traits are now implemented for the
`Stdio` type and the `AsRaw{Fd,Handle}` traits are now implemented for the
`Child{Stdout,Stdin,Stderr}` types.
The stability markers for these implementations mention that they are stable for
1.1 as I will nominate this commit for cherry-picking to beta.
This takes the cases from InvalidInput where a data format error
was encountered. This is different from the documented semantics
of InvalidInput, which more likely indicate a programming error.
This adds an example from mem::swap, and provides some suggested uses of this
function.
Change wording on comment on forget line to be more specific as to why we
need to call forget.
This breaks the examples up into three pieces. The last piece isn't
compiling for some reason.
