Nominated (I-nominated) issues
`Arc` should only require `Sync`, not `Send` (#20257)
Correctly handle dllimport on Windows/MSVC (#27438)
Explicit OIBIT impls hide the default impls (#27554)
- Added I-nominated. By @huonw
Allow where clauses involving types which don't include a type parameter. (#27972)
Settle execution order uncertainty for `+=` (#28160)
Audit iterator specializations for side effects (#28810)
- Added I-nominated. By @alexcrichton
After some discussion about https://github.com/rust-lang/rust/pull/28125 the libs subteam decided that iterator adaptors should always preserve the same semantics in terms of the convenience methods and such. This was not audited for when all the initial specializations landed, so we should take a look and make sure that everything adheres to this policy.
Additionally, documentation should be added to the
Iteratortrait methods indicating what form of guarantees you are given (e.g. callinglastis equivalent to exhausting the iterator).triage: I-nominated
- Removed I-nominated. By @alexcrichton
- Added I-nominated. By @alexcrichton
#28669 caused regression compiling pinyin crate on nightly (#28853)
- Added I-nominated. By @alexcrichton
triage: I-nominated
Nightly regression: lifetime error with autoderef (#28854)
- Added I-nominated. By @alexcrichton
triage: I-nominated
Tagging as T-compiler, but may also be T-lang (not sure). This compiles ok on stable/beta and fails to compile on nightly.
Beta-nominated issues
check upvars in closures that are in statics (#28131, closed)
- Added beta-nominated. By @alexcrichton
triage: beta-nominated
@arielb1 indicates that the regression reported in https://github.com/rust-lang/rust/issues/28801 was fixed by this PR (e.g. working in 1.3, broken in 1.4 (beta), and working in 1.5), so nominating for a backport to beta.
Warn on `pub extern crate`. (#28486, closed)
Make function pointers implement traits for up to 12 parameters (#28560, closed)
use the infcx tables to check if a closure is Copy (#28626, closed)
Un-regress conflicting destructors (#28681, closed)
rustc: Don't lint about isize/usize in FFI (#28779, closed)
Remaining issues
Deref coercions do not work with blocks (#26978)
- Added P-medium. By @nikomatsakis
triage: P-medium
Generic type defaults should not be allowed if they don’t satisfy type constraints (#28024)
- Added P-high. By @nikomatsakis
triage: P-high
Seems like a straightforward oversight in the WF checker.
Open tracking issues for all language features (#28244)
- Added P-medium. By @nikomatsakis
triage: P-medium
Field access of block: discrepancy between parser-lalr and rustc (#28379)
- Added I-nominated. By @nikomatsakis
- Added P-medium. By @nikomatsakis
triage: P-medium
This is a backwards incompat issue, but feels like an edge case. Nonetheless we should definitely fix it!
Private trait's methods reachable through UFCS (#28514)
- Added P-high. By @nikomatsakis
triage: P-high
ICE: unexpected panic in InferCtxt (#28550)
- Added P-medium. By @nikomatsakis
triage: P-medium
Lifetime bounds on structs do not entirely constrain impl fns (#28609)
- Added P-high. By @nikomatsakis
triage: P-high
LLVM loop optimization can make safe programs crash (#28728)
- Added P-medium. By @nikomatsakis
triage: P-medium
We’d like to see what LLVM will do before we invest a lot of effort on our side, and this seems relatively unlikely to cause problems in practice (though I have personally hit this while developing the compiler as well). There are no backwards incomatibility issues to be concerned about.
Wrapping expr in curly braces changes the operator precedence (#28777)
- Added P-medium. By @nikomatsakis
Um, I agree.
triage: P-medium
Parsing inconsistencies (lambda, proc, return) (#28784)
- Added P-medium. By @nikomatsakis
I agree with @rprichard's take for the most part. I guess that `return as i32` ought to parse...weird as it is.
triage: P-medium
Range expressions: discrepancies between rustc and parser-lalr (#28785)
- Added I-nominated. By @huonw
- Added P-medium. By @nikomatsakis
triage: P-medium
This is a backwards incompat issue, but feels like an edge case. Nonetheless we should definitely fix it!
Regression in type inference of casting in constants (#28801)
- Added I-nominated. By @alexcrichton
triage: I-nominated
- Removed I-nominated. By @alexcrichton
How to extract static reference from Option? (#28839)
- Added P-high. Set milestone: regression. By @nikomatsakis
I'm not 100% sure what's going on. It seems to have to do with the coercion rules. I'm not aware that they changed recently, but I'll have to review the PRs.
triage: P-high (regression)