Rollup of 6 pull requests #112092
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Rollup of 6 pull requests #112092
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These tend to have special handling in a bunch of places anyway, so the variant helps remember that. And I think it's easier to grok than non-Scalar Aggregates sometimes being `Immediates` (like I got wrong and caused 109992). As a minor bonus, it means we don't need to generate poison LLVM values for them to pass around in `OperandValue::Immediate`s.
... by enabling xgot feature Co-Authored-By: Zixing Liu <zixing.liu@canonical.com>
Go through an intermediate pair of `cc`and `lld` hints instead of mapping CLI options to `LinkerFlavor` directly, and use the target's default linker flavor as a reference.
Previously they would be reported as link time errors about unknown linker options
…esleywiser linker: Report linker flavors incompatible with the current target The linker flavor is checked for target compatibility even if linker is never used (e.g. we are producing a rlib). If it causes trouble, we can move the check to `link.rs` so it will run if the linker (flavor) is actually used. And also feature gate explicitly specifying linker flavors for tier 3 targets. The next step is supporting all the internal linker flavors in user-visible interfaces (command line and json).
…ompiler-errors Add a distinct `OperandValue::ZeroSized` variant for ZSTs These tend to have special handling in a bunch of places anyway, so the variant helps remember that. And I think it's easier to grok than `Aggregate`s sometimes being `Immediates` (after all, I previously got that wrong and caused rust-lang#109992). As a minor bonus, it means we don't need to generate poison LLVM values for ZSTs to pass around in `OperandValue::Immediate`s. Inspired by rust-lang#110021 (comment), so r? `@compiler-errors`
…cked, r=WaffleLapkin
Uplift `clippy::invalid_utf8_in_unchecked` lint
This PR aims at uplifting the `clippy::invalid_utf8_in_unchecked` lint into two lints.
## `invalid_from_utf8_unchecked`
(deny-by-default)
The `invalid_from_utf8_unchecked` lint checks for calls to `std::str::from_utf8_unchecked` and `std::str::from_utf8_unchecked_mut` with an invalid UTF-8 literal.
### Example
```rust
unsafe {
std::str::from_utf8_unchecked(b"cl\x82ippy");
}
```
### Explanation
Creating such a `str` would result in undefined behavior as per documentation for `std::str::from_utf8_unchecked` and `std::str::from_utf8_unchecked_mut`.
## `invalid_from_utf8`
(warn-by-default)
The `invalid_from_utf8` lint checks for calls to `std::str::from_utf8` and `std::str::from_utf8_mut` with an invalid UTF-8 literal.
### Example
```rust
std::str::from_utf8(b"ru\x82st");
```
### Explanation
Trying to create such a `str` would always return an error as per documentation for `std::str::from_utf8` and `std::str::from_utf8_mut`.
-----
Mostly followed the instructions for uplifting a clippy lint described here: rust-lang#99696 (review)
`@rustbot` label: +I-lang-nominated
r? compiler
-----
For Clippy:
changelog: Moves: Uplifted `clippy::invalid_utf8_in_unchecked` into rustc
…alfJung
Print a backtrace in const eval if interrupted
Demo:
```rust
#![feature(const_eval_limit)]
#![const_eval_limit = "0"]
const OW: u64 = {
let mut res: u64 = 0;
let mut i = 0;
while i < u64::MAX {
res = res.wrapping_add(i);
i += 1;
}
res
};
fn main() {
println!("{}", OW);
}
```
```
╭ ➜ ben@archlinux:~/rust
╰ ➤ rustc +stage1 spin.rs
^Cerror[E0080]: evaluation of constant value failed
--> spin.rs:8:33
|
8 | res = res.wrapping_add(i);
| ^ Compilation was interrupted
note: erroneous constant used
--> spin.rs:15:20
|
15 | println!("{}", OW);
| ^^
note: erroneous constant used
--> spin.rs:15:20
|
15 | println!("{}", OW);
| ^^
|
= note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to previous error
For more information about this error, try `rustc --explain E0080`.
```
…jackh726 Fix linkage for large binaries on mips64 platforms This pull request fixes the linkage for large binaries on mips64 platforms by enabling the `xgot` feature in LLVM. It is well understood that the generated binary will gain a hefty performance penalty where the external symbol jumps now cost at least three instructions each. Also, this pull request does not address the same issue on the mips32 counterparts (due to being unable to test the changes thoroughly). Should fix rust-lang#52108
…lor-9, r=notriddle Migrate GUI colors test to original CSS color format Follow-up of rust-lang#111459. The `browser-ui-test` update is a fix when converting the alpha value to hex format. More information [here](GuillaumeGomez/browser-UI-test#511). r? `@notriddle`
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@bors r+ rollup=never p=𝟝 |
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⌛ Testing commit 8c1dda1 with merge dad3f21a18aaa3b0ada55287c0c6935054ce917f... |
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💔 Test failed - checks-actions |
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Successful merges:
OperandValue::ZeroSizedvariant for ZSTs #111318 (Add a distinctOperandValue::ZeroSizedvariant for ZSTs)clippy::invalid_utf8_in_uncheckedlint #111543 (Upliftclippy::invalid_utf8_in_uncheckedlint)Failed merges:
ui/discrimdir #112068 (Move tests fromui/discrimdir)r? @ghost
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