1 files changed, 77 insertions, 0 deletions
diff --git a/tests/ui/lint/issue-14309.stderr b/tests/ui/lint/issue-14309.stderr
new file mode 100644
index 000000000..9ce62a6b8
--- /dev/null
+++ b/tests/ui/lint/issue-14309.stderr
@@ -0,0 +1,77 @@
+error: `extern` block uses type `A`, which is not FFI-safe
+  --> $DIR/issue-14309.rs:30:15
+   |
+LL |     fn foo(x: A);
+   |               ^ not FFI-safe
+   |
+   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
+   = note: this struct has unspecified layout
+note: the type is defined here
+  --> $DIR/issue-14309.rs:4:1
+   |
+LL | struct A {
+   | ^^^^^^^^
+note: the lint level is defined here
+  --> $DIR/issue-14309.rs:1:9
+   |
+LL | #![deny(improper_ctypes)]
+   |         ^^^^^^^^^^^^^^^
+
+error: `extern` block uses type `A`, which is not FFI-safe
+  --> $DIR/issue-14309.rs:31:15
+   |
+LL |     fn bar(x: B);
+   |               ^ not FFI-safe
+   |
+   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
+   = note: this struct has unspecified layout
+note: the type is defined here
+  --> $DIR/issue-14309.rs:4:1
+   |
+LL | struct A {
+   | ^^^^^^^^
+
+error: `extern` block uses type `A`, which is not FFI-safe
+  --> $DIR/issue-14309.rs:33:15
+   |
+LL |     fn qux(x: A2);
+   |               ^^ not FFI-safe
+   |
+   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
+   = note: this struct has unspecified layout
+note: the type is defined here
+  --> $DIR/issue-14309.rs:4:1
+   |
+LL | struct A {
+   | ^^^^^^^^
+
+error: `extern` block uses type `A`, which is not FFI-safe
+  --> $DIR/issue-14309.rs:34:16
+   |
+LL |     fn quux(x: B2);
+   |                ^^ not FFI-safe
+   |
+   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
+   = note: this struct has unspecified layout
+note: the type is defined here
+  --> $DIR/issue-14309.rs:4:1
+   |
+LL | struct A {
+   | ^^^^^^^^
+
+error: `extern` block uses type `A`, which is not FFI-safe
+  --> $DIR/issue-14309.rs:36:16
+   |
+LL |     fn fred(x: D);
+   |                ^ not FFI-safe
+   |
+   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
+   = note: this struct has unspecified layout
+note: the type is defined here
+  --> $DIR/issue-14309.rs:4:1
+   |
+LL | struct A {
+   | ^^^^^^^^
+
+error: aborting due to 5 previous errors
+