bjoernager/rust
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Delegation: fix ICE on bound_vars divergence

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This commit is contained in:
Bryanskiy 2024-03-22 16:27:26 +03:00
parent eff958c59e
commit d1ba632f4f
4 changed files with 59 additions and 8 deletions
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10
compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
View file

@ -793,12 +793,20 @@ impl<'a, 'tcx> Visitor<'tcx> for BoundVarContext<'a, 'tcx> {
fd: &'tcx hir::FnDecl<'tcx>,
body_id: hir::BodyId,
_: Span,
_: LocalDefId,
def_id: LocalDefId,
) {
let output = match fd.output {
hir::FnRetTy::DefaultReturn(_) => None,
hir::FnRetTy::Return(ty) => Some(ty),
};
if let Some(ty) = output
&& let hir::TyKind::InferDelegation(sig_id, _) = ty.kind
{
let bound_vars: Vec<_> =
self.tcx.fn_sig(sig_id).skip_binder().bound_vars().iter().collect();
let hir_id = self.tcx.local_def_id_to_hir_id(def_id);
self.map.late_bound_vars.insert(hir_id, bound_vars);
}
self.visit_fn_like_elision(fd.inputs, output, matches!(fk, intravisit::FnKind::Closure));
intravisit::walk_fn_kind(self, fk);
self.visit_nested_body(body_id)

8
compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs
View file

@ -2494,13 +2494,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
hir_ty: Option<&hir::Ty<'_>>,
) -> ty::PolyFnSig<'tcx> {
let tcx = self.tcx();
let bound_vars = if let hir::FnRetTy::Return(ret_ty) = decl.output
&& let hir::TyKind::InferDelegation(sig_id, _) = ret_ty.kind
{
tcx.fn_sig(sig_id).skip_binder().bound_vars()
} else {
tcx.late_bound_vars(hir_id)
};
let bound_vars = tcx.late_bound_vars(hir_id);
debug!(?bound_vars);
// We proactively collect all the inferred type params to emit a single error per fn def.