1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/mismatched_types/issue-26480.rs b/src/test/ui/mismatched_types/issue-26480.rs
new file mode 100644
index 000000000..8bd26cebc
--- /dev/null
+++ b/src/test/ui/mismatched_types/issue-26480.rs
@@ -0,0 +1,29 @@
+extern "C" {
+    fn write(fildes: i32, buf: *const i8, nbyte: u64) -> i64;
+}
+
+#[inline(always)]
+fn size_of<T>(_: T) -> usize {
+    ::std::mem::size_of::<T>()
+}
+
+macro_rules! write {
+    ($arr:expr) => {{
+        #[allow(non_upper_case_globals)]
+        const stdout: i32 = 1;
+        unsafe {
+            write(stdout, $arr.as_ptr() as *const i8,
+                  $arr.len() * size_of($arr[0])); //~ ERROR mismatched types
+        }
+    }}
+}
+
+macro_rules! cast {
+    ($x:expr) => ($x as ()) //~ ERROR non-primitive cast
+}
+
+fn main() {
+    let hello = ['H', 'e', 'y'];
+    write!(hello);
+    cast!(2);
+}