1 files changed, 50 insertions, 0 deletions
diff --git a/src/test/ui/auto-traits/suspicious-impls-lint.rs b/src/test/ui/auto-traits/suspicious-impls-lint.rs
new file mode 100644
index 000000000..7712e84f4
--- /dev/null
+++ b/src/test/ui/auto-traits/suspicious-impls-lint.rs
@@ -0,0 +1,50 @@
+#![deny(suspicious_auto_trait_impls)]
+
+use std::marker::PhantomData;
+
+struct MayImplementSendOk<T>(T);
+unsafe impl<T: Send> Send for MayImplementSendOk<T> {} // ok
+
+struct MayImplementSendErr<T>(T);
+unsafe impl<T: Send> Send for MayImplementSendErr<&T> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+struct ContainsNonSendDirect<T>(*const T);
+unsafe impl<T: Send> Send for ContainsNonSendDirect<&T> {} // ok
+
+struct ContainsPtr<T>(*const T);
+struct ContainsIndirectNonSend<T>(ContainsPtr<T>);
+unsafe impl<T: Send> Send for ContainsIndirectNonSend<&T> {} // ok
+
+struct ContainsVec<T>(Vec<T>);
+unsafe impl Send for ContainsVec<i32> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+struct TwoParams<T, U>(T, U);
+unsafe impl<T: Send, U: Send> Send for TwoParams<T, U> {} // ok
+
+struct TwoParamsFlipped<T, U>(T, U);
+unsafe impl<T: Send, U: Send> Send for TwoParamsFlipped<U, T> {} // ok
+
+struct TwoParamsSame<T, U>(T, U);
+unsafe impl<T: Send> Send for TwoParamsSame<T, T> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+pub struct WithPhantomDataNonSend<T, U>(PhantomData<*const T>, U);
+unsafe impl<T> Send for WithPhantomDataNonSend<T, i8> {} // ok
+
+pub struct WithPhantomDataSend<T, U>(PhantomData<T>, U);
+unsafe impl<T> Send for WithPhantomDataSend<*const T, i8> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+pub struct WithLifetime<'a, T>(&'a (), T);
+unsafe impl<T> Send for WithLifetime<'static, T> {} // ok
+unsafe impl<T> Sync for WithLifetime<'static, Vec<T>> {}
+//~^ ERROR
+//~| WARNING this will change its meaning
+
+fn main() {}