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Get rid of one more useless lift invocation

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This commit is contained in:
Oliver Scherer 2019-08-05 17:49:40 +02:00
parent f2079338b5
commit bd57498e7d
1 changed files with 1 additions and 2 deletions
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3
src/librustc/ty/sty.rs
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@ -2305,8 +2305,7 @@ impl<'tcx> Const<'tcx> {
// because it tries to relate an `Infer` to a `Param`.
ConstValue::Unevaluated(did, substs) => {
// if `substs` has no unresolved components, use and empty param_env
let pem_and_substs = param_env.with_reveal_all().and(substs);
let (param_env, substs) = tcx.lift_to_global(&pem_and_substs).unwrap().into_parts();
let (param_env, substs) = param_env.with_reveal_all().and(substs).into_parts();
// try to resolve e.g. associated constants to their definition on an impl
let instance = ty::Instance::resolve(tcx, param_env, did, substs)?;
let gid = GlobalId {