1 files changed, 96 insertions, 0 deletions
diff --git a/tests/ui/repr/repr-transparent-non-exhaustive.rs b/tests/ui/repr/repr-transparent-non-exhaustive.rs
new file mode 100644
index 000000000..506f1dcf3
--- /dev/null
+++ b/tests/ui/repr/repr-transparent-non-exhaustive.rs
@@ -0,0 +1,96 @@
+#![deny(repr_transparent_external_private_fields)]
+
+// aux-build: repr-transparent-non-exhaustive.rs
+extern crate repr_transparent_non_exhaustive;
+
+use repr_transparent_non_exhaustive::{
+    Private,
+    NonExhaustive,
+    NonExhaustiveEnum,
+    NonExhaustiveVariant,
+    ExternalIndirection,
+};
+
+pub struct InternalPrivate {
+    _priv: (),
+}
+
+#[non_exhaustive]
+pub struct InternalNonExhaustive;
+
+pub struct InternalIndirection<T> {
+    x: T,
+}
+
+pub type Sized = i32;
+
+#[repr(transparent)]
+pub struct T1(Sized, InternalPrivate);
+#[repr(transparent)]
+pub struct T2(Sized, InternalNonExhaustive);
+#[repr(transparent)]
+pub struct T3(Sized, InternalIndirection<(InternalPrivate, InternalNonExhaustive)>);
+#[repr(transparent)]
+pub struct T4(Sized, ExternalIndirection<(InternalPrivate, InternalNonExhaustive)>);
+
+#[repr(transparent)]
+pub struct T5(Sized, Private);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T6(Sized, NonExhaustive);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T7(Sized, NonExhaustiveEnum);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T8(Sized, NonExhaustiveVariant);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T9(Sized, InternalIndirection<Private>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T10(Sized, InternalIndirection<NonExhaustive>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T11(Sized, InternalIndirection<NonExhaustiveEnum>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T12(Sized, InternalIndirection<NonExhaustiveVariant>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T13(Sized, ExternalIndirection<Private>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T14(Sized, ExternalIndirection<NonExhaustive>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T15(Sized, ExternalIndirection<NonExhaustiveEnum>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+#[repr(transparent)]
+pub struct T16(Sized, ExternalIndirection<NonExhaustiveVariant>);
+//~^ ERROR zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
+//~| WARN this was previously accepted by the compiler
+
+fn main() {}