1 files changed, 9 insertions, 1 deletions
diff --git a/compiler/rustc_middle/src/ty/generic_args.rs b/compiler/rustc_middle/src/ty/generic_args.rs
index 69ad6810c6f..b9fff660a03 100644
--- a/compiler/rustc_middle/src/ty/generic_args.rs
+++ b/compiler/rustc_middle/src/ty/generic_args.rs
@@ -2,7 +2,7 @@
 
 use crate::ty::codec::{TyDecoder, TyEncoder};
 use crate::ty::fold::{FallibleTypeFolder, TypeFoldable, TypeFolder, TypeSuperFoldable};
-use crate::ty::sty::{ClosureArgs, CoroutineArgs, InlineConstArgs};
+use crate::ty::sty::{ClosureArgs, CoroutineArgs, CoroutineClosureArgs, InlineConstArgs};
 use crate::ty::visit::{TypeVisitable, TypeVisitableExt, TypeVisitor};
 use crate::ty::{self, Lift, List, ParamConst, Ty, TyCtxt};
 
@@ -288,6 +288,14 @@ impl<'tcx> GenericArgs<'tcx> {
         ClosureArgs { args: self }
     }
 
+    /// Interpret these generic args as the args of a coroutine-closure type.
+    /// Coroutine-closure args have a particular structure controlled by the
+    /// compiler that encodes information like the signature and closure kind;
+    /// see `ty::CoroutineClosureArgs` struct for more comments.
+    pub fn as_coroutine_closure(&'tcx self) -> CoroutineClosureArgs<'tcx> {
+        CoroutineClosureArgs { args: self }
+    }
+
     /// Interpret these generic args as the args of a coroutine type.
     /// Coroutine args have a particular structure controlled by the
     /// compiler that encodes information like the signature and coroutine kind;