bjoernager/rust
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53 commits

Author SHA1 Message Date
Oli Scherer
a848c4ba3f
Avoid storing the ImplPolarity and Constness next to a TraitRef and use TraitPredicate instead 2021-11-29 21:19:49 +08:00
bors
18cae2680f Auto merge of #88441 - jackh726:closure_norm, r=nikomatsakis 
Normalize obligations for closure confirmation

Based on #90017

Fixes #74261
Fixes #71955
Fixes #88459

r? `@nikomatsakis`
 2021-11-06 01:12:39 +00:00
lcnr
b40aa64e48 stabilize relaxed_struct_unsize 2021-10-30 15:56:02 +02:00
Santiago Pastorino
8b0bfb0dcb
Consider negative polarity on overlap check 2021-10-20 12:10:45 -03:00
jackh726
cacc3ee801 Normalize obligations for closure confirmation 2021-10-18 12:35:42 -04:00
Manish Goregaokar
743e842afb
Rollup merge of #88963 - fee1-dead:const-iterator, r=oli-obk 
Coerce const FnDefs to implement const Fn traits

You can now pass a FnDef to a function expecting `F` where `F: ~const FnTrait`.

r? ``@oli-obk``

``@rustbot`` label T-compiler F-const_trait_impl
 2021-10-01 14:46:48 -07:00
Oli Scherer
9b5aa063d8 More tracing instrumentation 2021-09-28 12:28:22 +00:00
jackh726
c065f57111 Remove ToPolyTraitRef impl for TraitRef 2021-09-15 22:55:10 -04:00
jackh726
be76bdf905 Remove ToPredicate impls that use Binder::dummy 2021-09-15 20:54:50 -04:00
Deadbeef
f8aa73d3dd
Coerce const FnDefs to implement const Fn traits 2021-09-15 11:48:27 +00:00
Deadbeef
a13b13ff46
Const drop selection candidates 2021-09-09 05:21:31 +00:00
Deadbeef
80e1ee5aee
Add ty::BoundConstness 2021-08-27 06:49:18 +00:00
lcnr
cc47998e28 add tcx to fn walk 2021-08-26 11:00:30 +02:00
Frank Steffahn
bf88b113ea Fix typos “a”→“an” 2021-08-22 15:35:11 +02:00
Charles Lew
6b1c52ff25 Fold vtable_trait_upcasting_coercion_new_vptr_slot logic into obligation processing. 2021-08-18 13:00:27 +08:00
Charles Lew
1e605023ec Properly generate multiple candidates for trait upcasting coercion. 2021-08-18 13:00:27 +08:00
Charles Lew
fb4e0a0972 Implement trait upcasting coercion type-checking. 2021-07-31 00:51:39 +08:00
Charles Lew
a86d3a7e45 Refactor to make interpreter and codegen backend neutral to vtable internal representation. 2021-06-15 01:59:00 +08:00
Jack Huey
857cb4de20 Make traits with GATs not object safe 2021-04-27 14:34:23 -04:00
Jack Huey
62a49c3bb8 Add tcx lifetime to Binder 2021-03-31 10:13:57 -04:00
Jack Huey
4955d755d3 Some rebinds and dummys 2021-03-31 10:05:32 -04:00
Simon Sapin
696b239f72 Add ptr::Pointee trait (for all types) and ptr::metadata function 
RFC: https://github.com/rust-lang/rfcs/pull/2580
 2021-02-15 14:27:12 +01:00
Bastian Kauschke
031cce8cfc add relaxed_struct_unsize feature gate 2021-02-04 00:00:41 +01:00
Bastian Kauschke
50e394a05e relax adt unsizing requirements 2021-02-04 00:00:28 +01:00
Jack Huey
3dea68de1d Review changes 2021-01-16 18:56:37 -05:00
bors
1b6b06a03a Auto merge of #80132 - matthewjasper:revert-eval-order, r=nikomatsakis 
Revert change to trait evaluation order

This change breaks some code and doesn't appear to enable any new code.

closes #79902

r? `@nikomatsakis`
 2020-12-19 16:20:22 +00:00
Jack Huey
5e7095850c More rebinds 2020-12-19 04:26:35 -05:00
Matthew Jasper
3e31ffda97 Revert change to evaluation order 
This change breaks some code and doesn't appear to enable any new code.
 2020-12-17 20:16:10 +00:00
bors
eb4fc71dc9 Auto merge of #79945 - jackh726:existential_trait_ref, r=nikomatsakis 
Move binder for dyn to each list item

This essentially changes `ty::Binder<&'tcx List<ExistentialTraitRef>>` to `&'tcx List<ty::Binder<ExistentialTraitRef>>`.

This is a first step in moving the `dyn Trait` representation closer to Chalk, which we've talked about in `@rust-lang/wg-traits.`

r? `@nikomatsakis`
 2020-12-17 18:21:20 +00:00
Matthias Krüger
db6c50998c don't clone types that are copy (clippy::clone_on_copy) 2020-12-11 23:02:19 +01:00
Jack Huey
ed80815bf2 Move binder for dyn to each list item 2020-12-11 15:02:46 -05:00
Jonas Schievink
ee6f42ba94 Thread Constness through selection 2020-11-22 02:13:53 +01:00
Bastian Kauschke
2bf93bd852 compiler: fold by value 2020-11-16 22:34:57 +01:00
Matthew Jasper
50dde2e4d8 Normalize when finding trait object candidates 2020-10-22 08:18:29 +01:00
Matthew Jasper
6c43a64931 Fix ICE from projection cycle 
Cycles in normalization can cause evaluations to change from Unknown to
Err. This means that some selection that were applicable no longer are.

To avoid this:
* Selection candidates that are known to be applicable are prefered
  over candidates that are not.
* We don't ICE if a candidate is no longer applicable.
 2020-10-21 19:43:20 +01:00
Matthew Jasper
b8d2560dca Use tracing spans in rustc_trait_selection 2020-10-11 16:08:23 +01:00
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
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
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
21eccbb587 Fix ICE 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
d4d9e7f67f Remove unused part of return value from replace_bound_vars_with_placeholders 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