1 files changed, 60 insertions, 0 deletions
diff --git a/tests/ui/generator/print/generator-print-verbose-1.drop_tracking_mir.stderr b/tests/ui/generator/print/generator-print-verbose-1.drop_tracking_mir.stderr
new file mode 100644
index 000000000..c045b1441
--- /dev/null
+++ b/tests/ui/generator/print/generator-print-verbose-1.drop_tracking_mir.stderr
@@ -0,0 +1,60 @@
+error: generator cannot be sent between threads safely
+  --> $DIR/generator-print-verbose-1.rs:40:5
+   |
+LL |     require_send(send_gen);
+   |     ^^^^^^^^^^^^ generator is not `Send`
+   |
+   = help: the trait `Sync` is not implemented for `RefCell<i32>`
+   = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
+note: generator is not `Send` as this value is used across a yield
+  --> $DIR/generator-print-verbose-1.rs:38:9
+   |
+LL |         let _non_send_gen = make_non_send_generator();
+   |             ------------- has type `Opaque(DefId(0:34 ~ generator_print_verbose_1[749a]::make_non_send_generator::{opaque#0}), [])` which is not `Send`
+LL |         yield;
+   |         ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
+note: required by a bound in `require_send`
+  --> $DIR/generator-print-verbose-1.rs:29:25
+   |
+LL | fn require_send(_: impl Send) {}
+   |                         ^^^^ required by this bound in `require_send`
+
+error[E0277]: `RefCell<i32>` cannot be shared between threads safely
+  --> $DIR/generator-print-verbose-1.rs:59:5
+   |
+LL |     require_send(send_gen);
+   |     ^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
+   |
+   = help: the trait `Sync` is not implemented for `RefCell<i32>`
+   = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
+   = note: required for `Arc<RefCell<i32>>` to implement `Send`
+note: required because it's used within this generator
+  --> $DIR/generator-print-verbose-1.rs:45:5
+   |
+LL |     || {
+   |     ^^
+note: required because it appears within the type `Opaque(DefId(0:35 ~ generator_print_verbose_1[749a]::make_gen2::{opaque#0}), [Arc<RefCell<i32>>])`
+  --> $DIR/generator-print-verbose-1.rs:44:30
+   |
+LL | pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> {
+   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^
+note: required because it appears within the type `Opaque(DefId(0:36 ~ generator_print_verbose_1[749a]::make_non_send_generator2::{opaque#0}), [])`
+  --> $DIR/generator-print-verbose-1.rs:50:34
+   |
+LL | fn make_non_send_generator2() -> impl Generator<Return = Arc<RefCell<i32>>> {
+   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = note: required because it captures the following types: `Opaque(DefId(0:36 ~ generator_print_verbose_1[749a]::make_non_send_generator2::{opaque#0}), [])`
+note: required because it's used within this generator
+  --> $DIR/generator-print-verbose-1.rs:55:20
+   |
+LL |     let send_gen = || {
+   |                    ^^
+note: required by a bound in `require_send`
+  --> $DIR/generator-print-verbose-1.rs:29:25
+   |
+LL | fn require_send(_: impl Send) {}
+   |                         ^^^^ required by this bound in `require_send`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.