1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/consts/transmute-size-mismatch-before-typeck.rs b/src/test/ui/consts/transmute-size-mismatch-before-typeck.rs
new file mode 100644
index 000000000..852a5b3b4
--- /dev/null
+++ b/src/test/ui/consts/transmute-size-mismatch-before-typeck.rs
@@ -0,0 +1,13 @@
+// normalize-stderr-64bit "64 bits" -> "word size"
+// normalize-stderr-32bit "32 bits" -> "word size"
+// normalize-stderr-64bit "128 bits" -> "2 * word size"
+// normalize-stderr-32bit "64 bits" -> "2 * word size"
+
+fn main() {
+    match &b""[..] {
+        ZST => {}
+    }
+}
+
+const ZST: &[u8] = unsafe { std::mem::transmute(1usize) };
+//~^ ERROR cannot transmute between types of different sizes