Auto merge of #52620 - mikhail-m1:51351, r=nikomatsakis

fix simple case of issue #51351 and #52133

r? @nikomatsakis

src/test/ui/nll/closure-requirements/propagate-approximated-ref.stderr

@@ -20,7 +20,7 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 5
    = note: where '_#1r: '_#2r
 
 error[E0623]: lifetime mismatch

src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr

@@ -20,7 +20,7 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) u32>))
            ]
-   = note: number of external vids: 2
+   = note: number of external vids: 4
    = note: where '_#1r: '_#0r
 
 error: borrowed data escapes outside of function

src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr

@@ -20,7 +20,7 @@ LL | |     });
                i16,
                for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't0)) std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 't1)) u32>))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 5
    = note: where '_#1r: '_#0r
 
 error: borrowed data escapes outside of function

src/test/ui/nll/closure-requirements/propagate-approximated-val.stderr

@@ -20,7 +20,7 @@ LL | |     });
                i16,
                for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 5
    = note: where '_#1r: '_#2r
 
 error[E0623]: lifetime mismatch

src/test/ui/nll/closure-requirements/propagate-despite-same-free-region.stderr

@@ -18,7 +18,7 @@ LL | |         },
                i16,
                for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) u32>))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 4
    = note: where '_#1r: '_#2r
 
 note: No external requirements

src/test/ui/nll/closure-requirements/propagate-from-trait-match.stderr

@@ -23,7 +23,7 @@ LL | |     });
                i32,
                extern "rust-call" fn((T,))
            ]
-   = note: number of external vids: 2
+   = note: number of external vids: 3
    = note: where T: '_#1r
 
 error[E0309]: the parameter type `T` may not live long enough

src/test/ui/nll/issue-51351.rs

@@ -0,0 +1,32 @@
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+//
+// Regression test for #51351 and #52133: In the case of #51351,
+// late-bound regions (like 'a) that were unused within the arguments of
+// a function were overlooked and could case an ICE. In the case of #52133,
+// LBR defined on the creator function needed to be added to the free regions
+// of the closure, as they were not present in the closure's generic
+// declarations otherwise.
+//
+// compile-pass
+
+#![feature(nll)]
+
+fn creash<'a>() {
+    let x: &'a () = &();
+}
+
+fn produce<'a>() {
+   move || {
+        let x: &'a () = &();
+   };
+}
+
+fn main() {}

src/test/ui/nll/issue-52133.rs

@@ -0,0 +1,50 @@
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+//
+
+#![allow(warnings)]
+#![feature(nll)]
+
+trait Bazinga { }
+impl<F> Bazinga for F { }
+
+fn produce1<'a>(data: &'a u32) -> impl Bazinga + 'a {
+    let x = move || {
+        let _data: &'a u32 = data;
+    };
+    x
+}
+
+fn produce2<'a>(data: &'a mut Vec<&'a u32>, value: &'a u32) -> impl Bazinga + 'a {
+    let x = move || {
+        let value: &'a u32 = value;
+        data.push(value);
+    };
+    x
+}
+
+
+fn produce3<'a, 'b: 'a>(data: &'a mut Vec<&'a u32>, value: &'b u32) -> impl Bazinga + 'a {
+    let x = move || {
+        let value: &'a u32 = value;
+        data.push(value);
+    };
+    x
+}
+
+fn produce_err<'a, 'b: 'a>(data: &'b mut Vec<&'b u32>, value: &'a u32) -> impl Bazinga + 'b {
+    let x = move || { //~ ERROR lifetime mismatch
+        let value: &'a u32 = value;
+        data.push(value);
+    };
+    x
+}
+
+fn main() { }

src/test/ui/nll/issue-52133.stderr

@@ -0,0 +1,11 @@
+error[E0623]: lifetime mismatch
+  --> $DIR/issue-52133.rs:43:9
+   |
+LL | fn produce_err<'a, 'b: 'a>(data: &'b mut Vec<&'b u32>, value: &'a u32) -> impl Bazinga + 'b {
+   |                                  --------------------         ------- these two types are declared with different lifetimes...
+LL |     let x = move || { //~ ERROR lifetime mismatch
+   |         ^ ...but data from `value` flows into `data` here
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0623`.

src/test/ui/nll/ty-outlives/projection-no-regions-closure.stderr

@@ -22,7 +22,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
                i32,
                extern "rust-call" fn((std::boxed::Box<T>,)) -> std::boxed::Box<(dyn Anything + '_#2r)>
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 4
    = note: where <T as std::iter::Iterator>::Item: '_#2r
 
 error[E0309]: the associated type `<T as std::iter::Iterator>::Item` may not live long enough
@@ -62,7 +62,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
                i32,
                extern "rust-call" fn((std::boxed::Box<T>,)) -> std::boxed::Box<(dyn Anything + '_#2r)>
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 4
    = note: where <T as std::iter::Iterator>::Item: '_#2r
 
 note: No external requirements
@@ -94,7 +94,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
                i32,
                extern "rust-call" fn((std::boxed::Box<T>,)) -> std::boxed::Box<(dyn Anything + '_#3r)>
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where <T as std::iter::Iterator>::Item: '_#3r
 
 error[E0309]: the associated type `<T as std::iter::Iterator>::Item` may not live long enough
@@ -136,7 +136,7 @@ LL |     with_signature(x, |mut y| Box::new(y.next()))
                i32,
                extern "rust-call" fn((std::boxed::Box<T>,)) -> std::boxed::Box<(dyn Anything + '_#3r)>
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where <T as std::iter::Iterator>::Item: '_#3r
 
 note: No external requirements

src/test/ui/nll/ty-outlives/projection-one-region-closure.stderr

@@ -28,7 +28,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 5
    = note: where T: '_#2r
    = note: where '_#1r: '_#2r
 
@@ -76,7 +76,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where T: '_#3r
    = note: where '_#2r: '_#3r
 
@@ -125,7 +125,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where T: '_#3r
    = note: where '_#2r: '_#3r
 
@@ -174,7 +174,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where T: '_#3r
    = note: where '_#2r: '_#3r
 

src/test/ui/nll/ty-outlives/projection-one-region-trait-bound-closure.stderr

@@ -28,7 +28,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 5
    = note: where '_#1r: '_#2r
 
 error: unsatisfied lifetime constraints
@@ -67,7 +67,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where '_#2r: '_#3r
 
 error: unsatisfied lifetime constraints
@@ -107,7 +107,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where '_#2r: '_#3r
 
 error: unsatisfied lifetime constraints
@@ -147,7 +147,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where '_#2r: '_#3r
 
 note: No external requirements
@@ -180,7 +180,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 4
    = note: where '_#1r: '_#2r
 
 note: No external requirements

src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.rs

@@ -47,7 +47,7 @@ where
 {
     with_signature(cell, t, |cell, t| require(cell, t));
     //~^ WARNING not reporting region error due to nll
-    //~| ERROR associated type `<T as Anything<'_#5r, '_#6r>>::AssocType` may not live long enough
+    //~| ERROR associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
 }
 
 #[rustc_regions]
@@ -58,7 +58,7 @@ where
 {
     with_signature(cell, t, |cell, t| require(cell, t));
     //~^ WARNING not reporting region error due to nll
-    //~| ERROR associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
+    //~| ERROR associated type `<T as Anything<'_#7r, '_#8r>>::AssocType` may not live long enough
 }
 
 #[rustc_regions]
@@ -79,7 +79,7 @@ where
 
     with_signature(cell, t, |cell, t| require(cell, t));
     //~^ WARNING not reporting region error due to nll
-    //~| ERROR associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
+    //~| ERROR associated type `<T as Anything<'_#7r, '_#8r>>::AssocType` may not live long enough
 }
 
 #[rustc_regions]

src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.stderr

@@ -35,16 +35,16 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 6
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#2r)>>::AssocType: '_#3r
 
-error[E0309]: the associated type `<T as Anything<'_#5r, '_#6r>>::AssocType` may not live long enough
+error[E0309]: the associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
   --> $DIR/projection-two-region-trait-bound-closure.rs:48:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: consider adding an explicit lifetime bound `<T as Anything<'_#5r, '_#6r>>::AssocType: ReFree(DefId(0/0:8 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(1:18), 'a))`...
+   = help: consider adding an explicit lifetime bound `<T as Anything<'_#6r, '_#7r>>::AssocType: ReFree(DefId(0/0:8 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(1:18), 'a))`...
 
 note: No external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:44:1
@@ -54,7 +54,7 @@ LL | | where
 LL | |     T: Anything<'b, 'c>,
 LL | | {
 ...  |
-LL | |     //~| ERROR associated type `<T as Anything<'_#5r, '_#6r>>::AssocType` may not live long enough
+LL | |     //~| ERROR associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
 LL | | }
    | |_^
    |
@@ -78,16 +78,16 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#4r ()>, T))
            ]
-   = note: number of external vids: 5
+   = note: number of external vids: 6
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
-error[E0309]: the associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
+error[E0309]: the associated type `<T as Anything<'_#7r, '_#8r>>::AssocType` may not live long enough
   --> $DIR/projection-two-region-trait-bound-closure.rs:59:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: consider adding an explicit lifetime bound `<T as Anything<'_#6r, '_#7r>>::AssocType: ReEarlyBound(0, 'a)`...
+   = help: consider adding an explicit lifetime bound `<T as Anything<'_#7r, '_#8r>>::AssocType: ReEarlyBound(0, 'a)`...
 
 note: No external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:54:1
@@ -97,7 +97,7 @@ LL | | where
 LL | |     T: Anything<'b, 'c>,
 LL | |     'a: 'a,
 ...  |
-LL | |     //~| ERROR associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
+LL | |     //~| ERROR associated type `<T as Anything<'_#7r, '_#8r>>::AssocType` may not live long enough
 LL | | }
    | |_^
    |
@@ -122,16 +122,16 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#4r ()>, T))
            ]
-   = note: number of external vids: 5
+   = note: number of external vids: 6
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
-error[E0309]: the associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
+error[E0309]: the associated type `<T as Anything<'_#7r, '_#8r>>::AssocType` may not live long enough
   --> $DIR/projection-two-region-trait-bound-closure.rs:80:29
    |
 LL |     with_signature(cell, t, |cell, t| require(cell, t));
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: consider adding an explicit lifetime bound `<T as Anything<'_#6r, '_#7r>>::AssocType: ReEarlyBound(0, 'a)`...
+   = help: consider adding an explicit lifetime bound `<T as Anything<'_#7r, '_#8r>>::AssocType: ReEarlyBound(0, 'a)`...
 
 note: No external requirements
   --> $DIR/projection-two-region-trait-bound-closure.rs:65:1
@@ -141,7 +141,7 @@ LL | | where
 LL | |     T: Anything<'b, 'c>,
 LL | |     T::AssocType: 'a,
 ...  |
-LL | |     //~| ERROR associated type `<T as Anything<'_#6r, '_#7r>>::AssocType` may not live long enough
+LL | |     //~| ERROR associated type `<T as Anything<'_#7r, '_#8r>>::AssocType` may not live long enough
 LL | | }
    | |_^
    |
@@ -166,7 +166,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#4r ()>, T))
            ]
-   = note: number of external vids: 5
+   = note: number of external vids: 6
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
 note: No external requirements
@@ -202,7 +202,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#4r ()>, T))
            ]
-   = note: number of external vids: 5
+   = note: number of external vids: 6
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#3r)>>::AssocType: '_#4r
 
 note: No external requirements
@@ -236,7 +236,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#1r)>>::AssocType: '_#2r
 
 error: unsatisfied lifetime constraints
@@ -275,7 +275,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where <T as Anything<ReClosureBound('_#2r), ReClosureBound('_#2r)>>::AssocType: '_#3r
 
 note: No external requirements
@@ -308,7 +308,7 @@ LL |     with_signature(cell, t, |cell, t| require(cell, t));
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 4
    = note: where <T as Anything<ReClosureBound('_#1r), ReClosureBound('_#1r)>>::AssocType: '_#2r
 
 note: No external requirements

src/test/ui/nll/ty-outlives/ty-param-closure-approximate-lower-bound.stderr

@@ -27,7 +27,7 @@ LL |     twice(cell, value, |a, b| invoke(a, b));
                i16,
                for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) T))
            ]
-   = note: number of external vids: 2
+   = note: number of external vids: 3
    = note: where T: '_#1r
 
 note: No external requirements
@@ -57,7 +57,7 @@ LL |     twice(cell, value, |a, b| invoke(a, b));
                i16,
                for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) T))
            ]
-   = note: number of external vids: 2
+   = note: number of external vids: 4
    = note: where T: '_#1r
 
 error[E0309]: the parameter type `T` may not live long enough

src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-return-type.stderr

@@ -22,7 +22,7 @@ LL |     with_signature(x, |y| y)
                i32,
                extern "rust-call" fn((std::boxed::Box<T>,)) -> std::boxed::Box<(dyn std::fmt::Debug + '_#2r)>
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 4
    = note: where T: '_#2r
 
 error[E0309]: the parameter type `T` may not live long enough

src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-where-clause.stderr

@@ -28,7 +28,7 @@ LL | |     })
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#1r ()>, T))
            ]
-   = note: number of external vids: 2
+   = note: number of external vids: 4
    = note: where T: '_#1r
 
 error[E0309]: the parameter type `T` may not live long enough
@@ -81,7 +81,7 @@ LL | |     })
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 4
    = note: where T: '_#2r
 
 note: No external requirements
@@ -119,7 +119,7 @@ LL | |     })
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#2r ()>, T))
            ]
-   = note: number of external vids: 3
+   = note: number of external vids: 5
    = note: where T: '_#2r
 
 error[E0309]: the parameter type `T` may not live long enough
@@ -170,7 +170,7 @@ LL | |     })
                i32,
                extern "rust-call" fn((std::cell::Cell<&'_#3r ()>, T))
            ]
-   = note: number of external vids: 4
+   = note: number of external vids: 5
    = note: where T: '_#3r
 
 note: No external requirements