1 files changed, 18 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-47486.stderr b/tests/ui/issues/issue-47486.stderr
new file mode 100644
index 000000000..c7e9af70e
--- /dev/null
+++ b/tests/ui/issues/issue-47486.stderr
@@ -0,0 +1,18 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-47486.rs:2:10
+   |
+LL |     () < std::mem::size_of::<_>();
+   |     --   ^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `usize`
+   |     |
+   |     expected because this is `()`
+
+error[E0282]: type annotations needed
+  --> $DIR/issue-47486.rs:3:11
+   |
+LL |     [0u8; std::mem::size_of::<_>()];
+   |           ^^^^^^^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `size_of`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0282, E0308.
+For more information about an error, try `rustc --explain E0282`.