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Adapt to upstream rustc changes to AliasTyKind::def_id #1262

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Adapt to upstream rustc changes to AliasTyKind::def_id #1262

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9 changes: 8 additions & 1 deletion cc_bindings_from_rs/generate_bindings/generate_function.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1212,8 +1212,15 @@ pub fn get_async_future_output_ty<'tcx>(
.ok_or_else(|| anyhow!("crubit.rs-bug: Future::Output lang item not found"))?;
#[rustversion::stable(1.95)]
let alias_def_id = alias_ty.def_id;
#[rustversion::any(nightly, stable(1.96))]
#[rustversion::any(all(nightly, before(2026-06-23)), stable(1.96))]
let alias_def_id = alias_ty.kind.def_id();
#[rustversion::all(nightly, since(2026-06-23))]
let alias_def_id = alias_ty.kind.try_to_projection().ok_or_else(|| {
anyhow!(
"go/crubit-bug: async function return type has unexpected alias kind (not a \
projection/trait associated type)",
)
})?;
tcx.explicit_item_bounds(alias_def_id)
.iter_instantiated_copied(tcx, alias_ty.args)
.find_map(|unnorm| {
Expand Down