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Rollup merge of #105410 - TaKO8Ki:fix-105257, r=BoxyUwU

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Consider `parent_count` for const param defaults

Fixes #105257
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Matthias Krüger 2022-12-10 15:01:44 +01:00 • committed by GitHub
commit 62160cba7b
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4 changed files with 33 additions and 1 deletions
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compiler/rustc_hir_analysis/src/collect/generics_of.rs
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@ -78,7 +78,7 @@ pub(super) fn generics_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::Generics {
let generics = tcx.generics_of(parent_def_id.to_def_id());
let param_def_idx = generics.param_def_id_to_index[&param_id.to_def_id()];
// In the above example this would be .params[..N#0]
let params = generics.params[..param_def_idx as usize].to_owned();
let params = generics.params_to(param_def_idx as usize, tcx).to_owned();
let param_def_id_to_index =
params.iter().map(|param| (param.def_id, param.index)).collect();