bjoernager/rust
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Rollup merge of #111980 - compiler-errors:unmapped-substs, r=lcnr

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Preserve substs in opaques recorded in typeck results

This means that we now prepopulate MIR with opaques with the right substs.

The first commit is a hack that I think we discussed, having to do with `DefiningAnchor::Bubble` basically being equivalent to `DefiningAnchor::Error` in the new solver, so having to use `DefiningAnchor::Bind` instead, lol.

r? `@lcnr`
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Dylan DPC 2023-06-01 11:09:43 +05:30 • committed by GitHub
commit ccf99bd769
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14 changed files with 128 additions and 188 deletions
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6
compiler/rustc_middle/src/ty/typeck_results.rs
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@ -155,11 +155,7 @@ pub struct TypeckResults<'tcx> {
/// We also store the type here, so that the compiler can use it as a hint
/// for figuring out hidden types, even if they are only set in dead code
/// (which doesn't show up in MIR).
///
/// These types are mapped back to the opaque's identity substitutions
/// (with erased regions), which is why we don't associated substs with any
/// of these usages.
pub concrete_opaque_types: FxIndexMap<LocalDefId, ty::OpaqueHiddenType<'tcx>>,
pub concrete_opaque_types: FxIndexMap<ty::OpaqueTypeKey<'tcx>, ty::OpaqueHiddenType<'tcx>>,
/// Tracks the minimum captures required for a closure;
/// see `MinCaptureInformationMap` for more details.