don't skip inference for type in `offset_of!`

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/ui/offset-of/offset-of-inference.rs b/tests/ui/offset-of/offset-of-inference.rs
new file mode 100644
index 00000000000..ba87574eae0
--- /dev/null
+++ b/tests/ui/offset-of/offset-of-inference.rs
@@ -0,0 +1,11 @@
+// Test that inference types in `offset_of!` don't ICE.
+
+#![feature(offset_of)]
+
+struct Foo<T> {
+    x: T,
+}
+
+fn main() {
+    let _ = core::mem::offset_of!(Foo<_>, x); //~ ERROR: type annotations needed
+}