1 files changed, 52 insertions, 0 deletions
diff --git a/src/test/ui/typeck/typeck-default-trait-impl-negation-sync.stderr b/src/test/ui/typeck/typeck-default-trait-impl-negation-sync.stderr
new file mode 100644
index 000000000..6bb5e1f54
--- /dev/null
+++ b/src/test/ui/typeck/typeck-default-trait-impl-negation-sync.stderr
@@ -0,0 +1,52 @@
+error[E0277]: `MyNotSync` cannot be shared between threads safely
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:33:15
+   |
+LL |     is_sync::<MyNotSync>();
+   |               ^^^^^^^^^ `MyNotSync` cannot be shared between threads safely
+   |
+   = help: the trait `Sync` is not implemented for `MyNotSync`
+note: required by a bound in `is_sync`
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:29:15
+   |
+LL | fn is_sync<T: Sync>() {}
+   |               ^^^^ required by this bound in `is_sync`
+
+error[E0277]: `UnsafeCell<u8>` cannot be shared between threads safely
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:36:5
+   |
+LL |     is_sync::<MyTypeWUnsafe>();
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ `UnsafeCell<u8>` cannot be shared between threads safely
+   |
+   = help: within `MyTypeWUnsafe`, the trait `Sync` is not implemented for `UnsafeCell<u8>`
+note: required because it appears within the type `MyTypeWUnsafe`
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:21:8
+   |
+LL | struct MyTypeWUnsafe {
+   |        ^^^^^^^^^^^^^
+note: required by a bound in `is_sync`
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:29:15
+   |
+LL | fn is_sync<T: Sync>() {}
+   |               ^^^^ required by this bound in `is_sync`
+
+error[E0277]: `Managed` cannot be shared between threads safely
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:39:5
+   |
+LL |     is_sync::<MyTypeManaged>();
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ `Managed` cannot be shared between threads safely
+   |
+   = help: within `MyTypeManaged`, the trait `Sync` is not implemented for `Managed`
+note: required because it appears within the type `MyTypeManaged`
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:25:8
+   |
+LL | struct MyTypeManaged {
+   |        ^^^^^^^^^^^^^
+note: required by a bound in `is_sync`
+  --> $DIR/typeck-default-trait-impl-negation-sync.rs:29:15
+   |
+LL | fn is_sync<T: Sync>() {}
+   |               ^^^^ required by this bound in `is_sync`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0277`.