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Makes it more obvious what's going on
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Seems to be around the minimum needed by rustc without split stacks
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static variables are pub by default, which is not reflected in our code
(we need to use priv).
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An 'overlong encoding' is a codepoint encoded non-minimally using the
utf-8 format. Denying these enforce each codepoint to have only one
valid representation in utf-8.
An example is byte sequence 0xE0 0x80 0x80 which could be interpreted as
U+0, but it's an overlong encoding since the canonical form is just
0x00.
Another example is 0xE0 0x80 0xAF which was previously accepted and is
an overlong encoding of the solidus "/". Directory traversal characters
like / and . form the most compelling argument for why this commit is
security critical.
Factor out common UTF-8 decoding expressions as macros. This commit will
partly duplicate UTF-8 decoding, so it is now present in both
fn is_utf8() and .char_range_at(); the latter using an assumption of
a valid str.
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Bytes 0xC0, 0xC1 can only be used to start 2-byte codepoint encodings,
that are 'overlong encodings' of codepoints below 128.
The reference given in a comment -- https://tools.ietf.org/html/rfc3629
-- does in fact already exclude these bytes, so no additional comment
should be needed in the code.
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Closes #8118, #7136
~~~rust
extern mod extra;
use std::vec;
use std::ptr;
fn bench_from_elem(b: &mut extra::test::BenchHarness) {
do b.iter {
let v: ~[u8] = vec::from_elem(1024, 0u8);
}
}
fn bench_set_memory(b: &mut extra::test::BenchHarness) {
do b.iter {
let mut v: ~[u8] = vec::with_capacity(1024);
unsafe {
let vp = vec::raw::to_mut_ptr(v);
ptr::set_memory(vp, 0, 1024);
vec::raw::set_len(&mut v, 1024);
}
}
}
fn bench_vec_repeat(b: &mut extra::test::BenchHarness) {
do b.iter {
let v: ~[u8] = ~[0u8, ..1024];
}
}
~~~
Before:
test bench_from_elem ... bench: 415 ns/iter (+/- 17)
test bench_set_memory ... bench: 85 ns/iter (+/- 4)
test bench_vec_repeat ... bench: 83 ns/iter (+/- 3)
After:
test bench_from_elem ... bench: 84 ns/iter (+/- 2)
test bench_set_memory ... bench: 84 ns/iter (+/- 5)
test bench_vec_repeat ... bench: 84 ns/iter (+/- 3)
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Renamed bytes_iter to byte_iter to match other iterators
Refactored str Iterators to use DoubleEnded Iterators and typedefs instead of wrapper structs
Reordered the Iterator section
Whitespace fixup
Moved clunky `each_split_within` function to the one place in the tree where it's actually needed
Replaced all block doccomments in str with line doccomments
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Closes #8118, #7136
~~~rust
extern mod extra;
use std::vec;
use std::ptr;
fn bench_from_elem(b: &mut extra::test::BenchHarness) {
do b.iter {
let v: ~[u8] = vec::from_elem(1024, 0u8);
}
}
fn bench_set_memory(b: &mut extra::test::BenchHarness) {
do b.iter {
let mut v: ~[u8] = vec::with_capacity(1024);
unsafe {
let vp = vec::raw::to_mut_ptr(v);
ptr::set_memory(vp, 0, 1024);
vec::raw::set_len(&mut v, 1024);
}
}
}
fn bench_vec_repeat(b: &mut extra::test::BenchHarness) {
do b.iter {
let v: ~[u8] = ~[0u8, ..1024];
}
}
~~~
Before:
test bench_from_elem ... bench: 415 ns/iter (+/- 17)
test bench_set_memory ... bench: 85 ns/iter (+/- 4)
test bench_vec_repeat ... bench: 83 ns/iter (+/- 3)
After:
test bench_from_elem ... bench: 84 ns/iter (+/- 2)
test bench_set_memory ... bench: 84 ns/iter (+/- 5)
test bench_vec_repeat ... bench: 84 ns/iter (+/- 3)
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Let's explain more of what this module is about, not just 'vectors.'
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The RandomAccessIterator implementation is not sound for the mutable vec
iterator, and makes it easy to duplicate &mut element pointers.
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Implement RAI where possible for iterator adaptors such as Map,
Enumerate, Skip, Take, Zip, Cycle (all of the requiring that the adapted
iterator also implements RAI).
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Drop the "Iterator" suffix for the the structs in std::iterator.
Filter, Zip, Chain etc. are shorter type names for when iterator
pipelines need their types written out in full in return value types, so
it's easier to read and write. the iterator module already forms enough
namespace.
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Implement Clone and DeepClone for functions with 0 to 8 arguments. `extern fn()` is implicitly copyable so it's simple, except there is no way to implement it generically over #n function arguments.
Allows deriving of Clone on structs containing `extern "Rust" fn`.
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Let's explain more of what this module is about, not just 'vectors.'
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available.
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Implement Clone and DeepClone for functions with 0 to 8 arguments.
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pull request for #8011
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Drop the "Iterator" suffix for the the structs in std::iterator.
Filter, Zip, Chain etc. are shorter type names for when iterator
pipelines need their types written out in full in return value types, so
it's easier to read and write. the iterator module already forms enough
namespace.
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FromIterator initially only implemented for Iterator<char>, which is the
type of the main iterator.
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Adds a fence operation to close #8061
Also adds static initializers to for atomic types. Since the fields are private, you aren't able to have `static mut` variables that are an atomic type. Each atomic type's initializer starts at a 0-value (so unset for `AtomicFlag` and false for `AtomicBool`).
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Good evening,
This is a superset of @MaikKlein's #7969 commit, that I've fixed up to compile. I had a couple commits I wanted to do on top of @MaikKlein's work that I didn't want to bitrot.
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