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check for cycles in default_anon_const_substs

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This commit is contained in:
lcnr 2021-07-19 13:03:29 +02:00
parent 2140016d6c
commit 031243898e
1 changed files with 5 additions and 0 deletions
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5
compiler/rustc_typeck/src/collect/type_of.rs
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@ -275,6 +275,11 @@ fn get_path_containing_arg_in_pat<'hir>(
}
pub(super) fn default_anon_const_substs(tcx: TyCtxt<'_>, def_id: DefId) -> SubstsRef<'_> {
let generics = tcx.generics_of(def_id);
if let Some(parent) = generics.parent {
let _cycle_check = tcx.predicates_of(parent);
}
let substs = InternalSubsts::identity_for_item(tcx, def_id);
// We only expect substs with the following type flags as default substs.
//