diff options
Diffstat (limited to 'compiler/rustc_pattern_analysis/src/lib.rs')
| -rw-r--r-- | compiler/rustc_pattern_analysis/src/lib.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/compiler/rustc_pattern_analysis/src/lib.rs b/compiler/rustc_pattern_analysis/src/lib.rs index 51784903178..a55d53dfdac 100644 --- a/compiler/rustc_pattern_analysis/src/lib.rs +++ b/compiler/rustc_pattern_analysis/src/lib.rs @@ -101,7 +101,11 @@ pub trait TypeCx: Sized + fmt::Debug { /// The types of the fields for this constructor. The result must have a length of /// `ctor_arity()`. - fn ctor_sub_tys(&self, ctor: &Constructor<Self>, ty: &Self::Ty) -> &[Self::Ty]; + fn ctor_sub_tys<'a>( + &'a self, + ctor: &'a Constructor<Self>, + ty: &'a Self::Ty, + ) -> impl Iterator<Item = Self::Ty> + ExactSizeIterator + Captures<'a>; /// The set of all the constructors for `ty`. /// |