diff options
Diffstat (limited to 'compiler/rustc_infer/src/infer/at.rs')
| -rw-r--r-- | compiler/rustc_infer/src/infer/at.rs | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/compiler/rustc_infer/src/infer/at.rs b/compiler/rustc_infer/src/infer/at.rs index d816a9ed3..7d9bae735 100644 --- a/compiler/rustc_infer/src/infer/at.rs +++ b/compiler/rustc_infer/src/infer/at.rs @@ -55,7 +55,7 @@ impl<'tcx> InferCtxt<'tcx> { cause: &'a ObligationCause<'tcx>, param_env: ty::ParamEnv<'tcx>, ) -> At<'a, 'tcx> { - At { infcx: self, cause, param_env, define_opaque_types: true } + At { infcx: self, cause, param_env, define_opaque_types: false } } /// Forks the inference context, creating a new inference context with the same inference @@ -369,6 +369,34 @@ impl<'tcx> ToTrace<'tcx> for Const<'tcx> { } } +impl<'tcx> ToTrace<'tcx> for ty::GenericArg<'tcx> { + fn to_trace( + _: TyCtxt<'tcx>, + cause: &ObligationCause<'tcx>, + a_is_expected: bool, + a: Self, + b: Self, + ) -> TypeTrace<'tcx> { + use GenericArgKind::*; + TypeTrace { + cause: cause.clone(), + values: match (a.unpack(), b.unpack()) { + (Lifetime(a), Lifetime(b)) => Regions(ExpectedFound::new(a_is_expected, a, b)), + (Type(a), Type(b)) => Terms(ExpectedFound::new(a_is_expected, a.into(), b.into())), + (Const(a), Const(b)) => { + Terms(ExpectedFound::new(a_is_expected, a.into(), b.into())) + } + + (Lifetime(_), Type(_) | Const(_)) + | (Type(_), Lifetime(_) | Const(_)) + | (Const(_), Lifetime(_) | Type(_)) => { + bug!("relating different kinds: {a:?} {b:?}") + } + }, + } + } +} + impl<'tcx> ToTrace<'tcx> for ty::Term<'tcx> { fn to_trace( _: TyCtxt<'tcx>, |