1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/issue-37788.stderr b/src/test/ui/proc-macro/issue-37788.stderr
new file mode 100644
index 000000000..345520d48
--- /dev/null
+++ b/src/test/ui/proc-macro/issue-37788.stderr
@@ -0,0 +1,17 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-37788.rs:8:5
+   |
+LL | fn main() {
+   |           - expected `()` because of default return type
+LL |     // Test that constructing the `visible_parent_map` (in `cstore_impl.rs`) does not ICE.
+LL |     std::cell::Cell::new(0)
+   |     ^^^^^^^^^^^^^^^^^^^^^^^- help: consider using a semicolon here: `;`
+   |     |
+   |     expected `()`, found struct `Cell`
+   |
+   = note: expected unit type `()`
+                 found struct `Cell<{integer}>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.