const limit for CTFE
I tried to tackle the first steps for this issue.
The active feature flag does link to the issue below, I think this has to change, because there should be a tracking issue?
1679a7647d/src/librustc_feature/active.rs (L530)
Also, I only put up the storage of the limit like "recursion_limit" but created a seperate file in the same place. Since I guess the invocation happens seperately.
https://github.com/TheSamsa/rust/blob/const-limit/src/librustc/middle/const_limit.rs
If this does not hold up for the issue and since there is a time pressure, just reject it.
hopefully this does not put more load on you than I expected...
submodules: update clippy from 8b7f7e66 to 74eae9dc
Changes:
````
Rustup to rust-lang/rust#69506
Revive rls integration test
use question mark operator
Add regression test
Use `try_eval_usize` over `eval_usize`
Add path for display trait
Use lang items instead of get_trait_def_id where possible
Update stderr
Don't lint debug formatting in debug impl
Whitelist unused attribute for use items.
add test for #5238
````
Makes clippy tests pass again.
r? @oli-obk
Correctly reject `TraitCandidate` in all cases
Follow up to #69255, addresses #69629.
When `self.select_trait_candidate(trait_ref)` returned `Err(_)`, `result` wasn't being set to `NoMatch`, causing invalid methods to be selected.
Previously, attributes on 'if' expressions (e.g. #[attr] if true {})
were disallowed during parsing. This made it impossible for macros to
perform any custom handling of such attributes (e.g. stripping them
away), since a compilation error would be emitted before they ever had a
chance to run.
This PR permits attributes on 'if' expressions ('if-attrs' from here on).
Both built-in attributes (e.g. `#[allow]`, `#[cfg]`) are supported.
We still do *not* accept attributes on 'other parts' of an if-else
chain. That is, the following code snippet still fails to parse:
```rust
if true {} #[attr] else if false {} else #[attr] if false {} #[attr]
else {}
```
Changes:
````
Apply suggestions from code review
Simplify if_chain.
Move NumericLiteral to its own module.
Included binary and octal cases.
Resolve false positives for hex int cast.
Test for unnecessary_cast of hex int literal.
run-rustfix
Lint `if let Some` in question_mark lint
Add restrictive pat use in full binded struct
Update test case answers to match cargo dev fmt
Ran cargo dev fmt
Rustup to rust-lang/rust#69506
Recommended changes from flip1995
Revive rls integration test
use question mark operator
Add regression test
Use `try_eval_usize` over `eval_usize`
Add path for display trait
Use lang items instead of get_trait_def_id where possible
Update stderr
Don't lint debug formatting in debug impl
Whitelist unused attribute for use items.
Fix one last test issue
Refactor suggested by krishna-veerareddy
Fixed compile error from merging
Changed test output to reflect cargo fmt
Run cargo dev fmt
Finished checking for cases of absolute values
add test for #5238
Some bugfixing
Created floating point abs lint and test, but not yet run
````
For all of the methods that pick off the first or last element, we can
use subslice patterns to implement them directly, rather than relying on
deeper indexing function calls. At a minimum, this means the generated
code will rely less on inlining for performance, but in some cases it
also optimizes better.
nightly: bootstrap from 1.42.0-beta.5 (4e1c5f0e9 2020-02-28)
This beta snapshot has the llvm miscompilation fix included and is bootstrapped from a stable version that also has it included.
