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687d7646de
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96 Commits

Author SHA1 Message Date
Yuki Okushi
687d7646de
Rollup merge of #77550 - lcnr:ty-dep-path-ct-cleanup, r=ecstatic-morse 
add shims for WithOptConstParam query calls

r? @ecstatic-morse @eddyb
 2020-10-13 04:07:50 +09:00
Dániel Buga
7993ddd89d Add find_map_relevant_impl 2020-10-09 16:22:49 +02:00
Matthew Jasper
022c148fcd Fix tests from rebase 2020-10-06 11:19:33 +01:00
Matthew Jasper
27534b3932 Fix rebase 2020-10-06 11:19:33 +01:00
Matthew Jasper
852073a7d2 Deduplicate item bounds after normalization 2020-10-06 11:19:32 +01:00
Matthew Jasper
e42c97919c Don't require lifetime super-bounds on traits apply to trait objects of that trait 2020-10-06 11:19:32 +01:00
Matthew Jasper
e674cf0200 Normalize super trait bounds when confirming object candidates 2020-10-06 11:19:32 +01:00
Matthew Jasper
d08ab945de Fix rebase 2020-10-06 11:19:32 +01:00
Matthew Jasper
6c4feb681f Fix bootstrap 2020-10-06 11:19:32 +01:00
Matthew Jasper
ed32482534 Handle multiple trait-def projection candidates 2020-10-06 11:19:32 +01:00
Matthew Jasper
0dfa6ff3be Avoid cycles from projection bounds 
Only check the own predicates of associated types when confirming
projection candidates.
Also consider implied bounds when comparing trait and impl methods.
 2020-10-06 11:19:32 +01:00
Matthew Jasper
596d6c4b3b Avoid cycle with projections from object types 
Normalizing `<dyn Iterator<Item = ()> as Iterator>::Item` no longer
requires selecting `dyn Iterator<Item = ()>: Iterator`. This was
previously worked around by using a special type-folder to normalize
things.
 2020-10-06 11:19:31 +01:00
Matthew Jasper
34e5a4992c Normalize projection bounds when considering candidates 
This unfortunately requires some winnowing hacks to avoid
now ambiguous candidates.
 2020-10-06 11:19:31 +01:00
Matthew Jasper
cfee49593d Handle multiple applicable projection candidates 2020-10-06 11:19:31 +01:00
Matthew Jasper
bc08b791bc Fix bugs in evaluating WellFormed predicates 
- List the nestsed obligations in an order that works with the
  single pass used by evaluation
- Propagate recursion depth correctly
 2020-10-06 11:19:31 +01:00
Matthew Jasper
f52b2d8890 Avoid cycle in nested obligations for object candidate 
Bounds of the form `type Future: Future<Result=Self::Result>` exist in
some ecosystem crates. To validate these bounds for trait objects we
need to normalize `Self::Result` in a way that doesn't cause a cycle.
 2020-10-06 11:19:31 +01:00
Matthew Jasper
8787090964 Address review comments 2020-10-06 11:19:31 +01:00
Matthew Jasper
21eccbb587 Fix ICE 2020-10-06 11:19:30 +01:00
Matthew Jasper
042464f75a Fix tests and bootstrap 2020-10-06 11:19:30 +01:00
Matthew Jasper
2bdf723da7 Ensure that associated types for trait objects satisfy their bounds 2020-10-06 11:19:30 +01:00
Matthew Jasper
0a76584dcc Move some code from rustc_typeck to rustc_trait_selection 2020-10-06 11:19:30 +01:00
Matthew Jasper
d4d9e7f67f Remove unused part of return value from replace_bound_vars_with_placeholders 2020-10-06 11:19:30 +01:00
Matthew Jasper
1b07991574 Check associated type bounds for object safety violations 2020-10-06 11:19:30 +01:00
Matthew Jasper
5b279c8016 Check opaque types satisfy their bounds 2020-10-06 11:19:30 +01:00
Matthew Jasper
b3057f4d5f Check projections are well-formed when using projection candidates 2020-10-06 11:19:29 +01:00
Matthew Jasper
87f2f42dc2 Make projection wf check the predicates for the projection 2020-10-06 11:19:29 +01:00
Matthew Jasper
d297147e62 Split bounds from predicates 2020-10-06 11:19:22 +01:00
Matthew Jasper
0eb87ed55f Rename projection_predicates to item_bounds 2020-10-06 11:18:45 +01:00
Yuki Okushi
2970af8e28
Rollup merge of #77559 - camelid:fix-rustdoc-warnings-invalid-rust-syntax, r=lcnr 
Fix rustdoc warnings about invalid Rust syntax
 2020-10-06 16:26:09 +09:00
Camelid
c8d25af698 Fixup 2020-10-05 15:07:27 -07:00
bors
ea7e131435 Auto merge of #77171 - VFLashM:better_sso_structures, r=oli-obk 
Better sso structures

This change greatly expands interface of MiniSet/MiniMap and renames them because they are no longer "Mini".
 2020-10-05 17:18:01 +00:00
Bastian Kauschke
8160bfa39c query_name_of_opt_const_arg -> query_name_opt_const_arg 2020-10-05 08:49:21 +02:00
Camelid
c877ff3664 Fix rustdoc warnings about invalid Rust syntax 2020-10-04 19:35:44 -07:00
Dylan DPC
9dbc9ed870
Rollup merge of #77514 - scottmcm:less-once-chain-once, r=estebank 
Replace some once(x).chain(once(y)) with [x, y] IntoIter

Now that we have by-value array iterators that are [already used](25c8c53dd9/compiler/rustc_hir/src/def.rs (L305-L307))...

For example,
```diff
-        once(self.type_ns).chain(once(self.value_ns)).chain(once(self.macro_ns)).filter_map(|it| it)
+        IntoIter::new([self.type_ns, self.value_ns, self.macro_ns]).filter_map(|it| it)
```
 2020-10-05 02:29:42 +02:00
Dylan DPC
5fa978fa1b
Rollup merge of #75928 - JulianKnodt:non_utf8, r=estebank 
Remove trait_selection error message in specific case

In the case that a trait is not implemented for an ADT with type errors, cancel the error.

Fixes #75627
 2020-10-05 02:29:25 +02:00
Bastian Kauschke
536674fb69 cleanup WithOptConstParam queries 2020-10-04 23:22:08 +02:00
Scott McMurray
d74b8e0505 Replace some once(x).chain(once(y)) with [x, y] IntoIter 
Now that we have by-value array iterators...
 2020-10-03 16:51:43 -07:00
Dylan DPC
6d3cfd9d51
Rollup merge of #77305 - lcnr:candidate_from_obligation, r=davidtwco 
move candidate_from_obligation_no_cache

It's only called from `candidate_from_obligation` which is already in this file.
 2020-10-01 02:13:37 +02:00
Dylan DPC
f23559451b
Rollup merge of #77303 - lcnr:const-evaluatable-TooGeneric, r=oli-obk,varkor 
const evaluatable: improve `TooGeneric` handling

Instead of emitting an error in `fulfill`, we now correctly stall on inference variables.

As `const_eval_resolve` returns `ErrorHandled::TooGeneric` when encountering generic parameters on which
we actually do want to error, we check for inference variables and eagerly emit an error if they don't exist, returning `ErrorHandled::Reported` instead.

Also contains a small bugfix for `ConstEquate` where we previously only stalled on type variables. This is probably a leftover from
when we did not yet support stalling on const inference variables.

r? @oli-obk cc @varkor @eddyb
 2020-10-01 02:13:35 +02:00
Bastian Kauschke
db5b70f193 move candidate_from_obligation_no_cache 2020-09-28 20:21:44 +02:00
Bastian Kauschke
a4783debe0 const evaluatable: improve TooGeneric handling 2020-09-28 20:18:06 +02:00
Dylan MacKenzie
c4d8089f00 Revert "Add an unused field of type Option<DefId> to ParamEnv struct." 
This reverts commit ab83d372ed.
 2020-09-26 21:01:09 -07:00
Valerii Lashmanov
5c224a484d MiniSet/MiniMap moved and renamed into SsoHashSet/SsoHashMap 
It is a more descriptive name and with upcoming changes
there will be nothing "mini" about them.
 2020-09-26 14:30:05 -05:00
Ralf Jung
9e02642fb3
Rollup merge of #77211 - est31:remove_unused_allow, r=oli-obk 
Remove unused #[allow(...)] statements from compiler/
 2020-09-26 12:58:34 +02:00
Ralf Jung
ac8169dc10
Rollup merge of #77093 - lcnr:const-generics-infer-warning, r=varkor 
merge `need_type_info_err(_const)`

I hoped that this would automatically solve #76737 but it doesn't quite seem like it

fixes #77092

r? @varkor
 2020-09-26 12:58:17 +02:00
Bastian Kauschke
32195ac8f4 rename functions 2020-09-26 10:28:15 +02:00
est31
12187b7f86 Remove unused #[allow(...)] statements from compiler/ 2020-09-26 01:25:55 +02:00
Jonas Schievink
e739468f97
Rollup merge of #77155 - lcnr:ImplSource, r=ecstatic-morse 
remove enum name from ImplSource variants

This is quite a lot cleaner in my opinion.
 2020-09-25 19:42:48 +02:00
bors
521d8d8a22 Auto merge of #77041 - lcnr:const-eval-perf, r=ecstatic-morse 
perf: move cold path of `process_obligations` into a separate function

cc #76575

This probably won't matter too much in the long run once #69218 is merged so we may not want to merge this.

r? `@ecstatic-morse`
 2020-09-25 10:14:47 +00:00
Jonas Schievink
6f3da3d53f
Rollup merge of #77121 - duckymirror:html-root-url, r=jyn514 
Updated html_root_url for compiler crates

Closes #77103

r? @jyn514
 2020-09-25 02:29:45 +02:00