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Don't ICE when ambiguity is found when selecting Index implementation in typeck#118112

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compiler-errors:index-ambiguity-ice
Nov 22, 2023
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Don't ICE when ambiguity is found when selecting Index implementation in typeck#118112
bors merged 1 commit into
rust-lang:masterfrom
compiler-errors:index-ambiguity-ice

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Fixes #118111

The problem here is when we're manually "selecting" an impl for base_ty: Index<?0>, we don't consider placeholder region errors (leak check) or ambiguous predicates. Those can lead to us not actually emitting any fulfillment errors on line 3131.

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rustbot commented Nov 20, 2023

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r? @cjgillot

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Nov 20, 2023
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r? aliemjay
@bors r+ rollup

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bors commented Nov 21, 2023

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📌 Commit 273dc22 has been approved by aliemjay

It is now in the queue for this repository.

@rustbot rustbot assigned aliemjay and unassigned cjgillot Nov 21, 2023
@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Nov 21, 2023
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Nov 21, 2023
…e, r=aliemjay

Don't ICE when ambiguity is found when selecting `Index` implementation in typeck

Fixes rust-lang#118111

The problem here is when we're manually "selecting" an impl for `base_ty: Index<?0>`, we don't consider placeholder region errors (leak check) or ambiguous predicates. Those can lead to us not actually emitting any fulfillment errors on line 3131.
bors added a commit to rust-lang-ci/rust that referenced this pull request Nov 21, 2023
…iaskrgr

Rollup of 4 pull requests

Successful merges:

 - rust-lang#117972 (Add VarDebugInfo to Stable MIR)
 - rust-lang#118110 (Document `DefiningAnchor` a bit more)
 - rust-lang#118112 (Don't ICE when ambiguity is found when selecting `Index` implementation in typeck)
 - rust-lang#118135 (Remove quotation from filename in stable_mir)

Failed merges:

 - rust-lang#118012 (Add support for global allocation in smir)

r? `@ghost`
`@rustbot` modify labels: rollup
let errors = ocx.select_where_possible();
let true_errors = ocx.select_where_possible();

// Do a leak check -- we can't really report report a useful error here,

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Small typo 😅

Suggested change
// Do a leak check -- we can't really report report a useful error here,
// Do a leak check -- we can't really report a useful error here,

matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Nov 21, 2023
…e, r=aliemjay

Don't ICE when ambiguity is found when selecting `Index` implementation in typeck

Fixes rust-lang#118111

The problem here is when we're manually "selecting" an impl for `base_ty: Index<?0>`, we don't consider placeholder region errors (leak check) or ambiguous predicates. Those can lead to us not actually emitting any fulfillment errors on line 3131.
bors added a commit to rust-lang-ci/rust that referenced this pull request Nov 22, 2023
…iaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#117972 (Add VarDebugInfo to Stable MIR)
 - rust-lang#118109 (rustdoc-search: simplify `checkPath` and `sortResults`)
 - rust-lang#118110 (Document `DefiningAnchor` a bit more)
 - rust-lang#118112 (Don't ICE when ambiguity is found when selecting `Index` implementation in typeck)
 - rust-lang#118135 (Remove quotation from filename in stable_mir)

Failed merges:

 - rust-lang#118012 (Add support for global allocation in smir)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 802f71b into rust-lang:master Nov 22, 2023
@rustbot rustbot added this to the 1.76.0 milestone Nov 22, 2023
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Nov 22, 2023
Rollup merge of rust-lang#118112 - compiler-errors:index-ambiguity-ice, r=aliemjay

Don't ICE when ambiguity is found when selecting `Index` implementation in typeck

Fixes rust-lang#118111

The problem here is when we're manually "selecting" an impl for `base_ty: Index<?0>`, we don't consider placeholder region errors (leak check) or ambiguous predicates. Those can lead to us not actually emitting any fulfillment errors on line 3131.
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ICE: broken MIR in DefId: index of non-array

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