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Return early to avoid ICE

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This commit is contained in:
Yuki Okushi 2020-05-30 18:48:54 +09:00
parent fcc0e8f7d4
commit 9fd8e1088f
1 changed files with 5 additions and 0 deletions
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5
clippy_lints/src/utils/mod.rs
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@ -323,6 +323,11 @@ pub fn implements_trait<'a, 'tcx>(
trait_id: DefId,
ty_params: &[GenericArg<'tcx>],
) -> bool {
// Do not check on infer_types to avoid panic in evaluate_obligation.
if ty.has_infer_types() {
return false;
}
let ty = cx.tcx.erase_regions(&ty);
let ty_params = cx.tcx.mk_substs(ty_params.iter());
cx.tcx.type_implements_trait((trait_id, ty, ty_params, cx.param_env))
}