Fix MIR lowering evaluation order and soundness bug
* Fixes a soundness issue with built-in index operations
* Ensures correct evaluation order of assignment expressions where the RHS is a FRU or is a use of a local of reference type.
* Removes an unnecessary symbol to string conversion
closes#65909closes#65910
The single dependency on queries (QueryName) can be fairly easily
abstracted via a trait and this further decouples Session from librustc
(the primary goal).
CentOS 5 only supports SSLv3 without SNI, and to get newer protocols
working we need to download and compile OpenSSL and cURL from our
mirror. Because of that, we can't use the CDN, as CloudFront requires
TLSv1 with SNI.
This commit changes the dist-x86_64-linux image to bypass the CDN for
OpenSSL and cURL.
This commit replaces the mirrors base URL contained in the MINGW_URL
with a CUSTOM_MINGW=1 environment variable. The mirrors base URL will be
fetched instead through the MIRRORS_BASE environment variable, defined
in src/ci/shared.sh.
support issue = "none" in unstable attributes
This works towards fixing #41260.
This PR allows the use of `issue = "none"` in unstable attributes and makes changes to internally store the issue number as an `Option<NonZeroU32>`. For example:
```rust
#[unstable(feature = "unstable_test_feature", issue = "none")]
fn unstable_issue_none() {}
```
It was not made optional because feedback seen here #60860 suggested that people might forget the issue field if it was optional.
I could not remove the current uses of `issue = "0"` (of which there are a lot) because the stage 0 compiler expects the old syntax. Once this is available in the stage 0 compiler we can replace all uses of `"0"` with `"none"` and no longer allow `"0"`. This is my first time contributing, so I'm not sure what the protocol is with two-part things like this, so some guidance would be appreciated.
r? @varkor
Fix HashSet::union performance
Consider this example: small_set = 0..2, large_set = 0..1000.
To efficiently compute the union of these sets, we should
* take all elements of the larger set
* for each element of the smaller set check it is not in the larger set
This is exactly what this commit does.
This particular optimization was implemented a year ago, but the
author mistaken `<` and `>`.
Fix error message about exported symbols from proc-macro crates
Someone forgot to update the error message after `#[proc_macro]` and
`#[proc_macro_attribute]` were stabilized.
