diff options
Diffstat (limited to 'compiler/rustc_middle/src/mir/query.rs')
| -rw-r--r-- | compiler/rustc_middle/src/mir/query.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/compiler/rustc_middle/src/mir/query.rs b/compiler/rustc_middle/src/mir/query.rs index 0540eb0efd6..078923ab5be 100644 --- a/compiler/rustc_middle/src/mir/query.rs +++ b/compiler/rustc_middle/src/mir/query.rs @@ -341,7 +341,11 @@ pub enum ConstraintCategory<'tcx> { UseAsConst, UseAsStatic, TypeAnnotation, - Cast, + Cast { + /// Whether this is an unsizing cast and if yes, this contains the target type. + /// Region variables are erased to ReErased. + unsize_to: Option<Ty<'tcx>>, + }, /// A constraint that came from checking the body of a closure. /// |