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Drive-by assertion in collect_return_position_impl_trait_in_trait_tys

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This commit is contained in:
Michael Goulet 2023-02-21 17:54:00 +00:00
parent da439d9874
commit 02b3664766
1 changed files with 7 additions and 0 deletions
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7
compiler/rustc_hir_analysis/src/check/compare_impl_item.rs
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@ -648,6 +648,13 @@ pub(super) fn collect_return_position_impl_trait_in_trait_tys<'tcx>(
tcx.fn_sig(trait_m.def_id).subst(tcx, trait_to_placeholder_substs), tcx.fn_sig(trait_m.def_id).subst(tcx, trait_to_placeholder_substs),
) )
.fold_with(&mut collector); .fold_with(&mut collector);
debug_assert_ne!(
collector.types.len(),
0,
"expect >1 RPITITs in call to `collect_return_position_impl_trait_in_trait_tys`"
);
let trait_sig = ocx.normalize(&norm_cause, param_env, unnormalized_trait_sig); let trait_sig = ocx.normalize(&norm_cause, param_env, unnormalized_trait_sig);
trait_sig.error_reported()?; trait_sig.error_reported()?;
let trait_return_ty = trait_sig.output(); let trait_return_ty = trait_sig.output();