1 files changed, 15 insertions, 0 deletions

diff --git a/tests/codegen/issues/issue-45466.rs b/tests/codegen/issues/issue-45466.rs
new file mode 100644
index 000000000..c79542767
--- /dev/null
+++ b/tests/codegen/issues/issue-45466.rs
@@ -0,0 +1,15 @@
+// compile-flags: -O
+// ignore-debug: the debug assertions get in the way
+
+#![crate_type="rlib"]
+
+// CHECK-LABEL: @memzero
+// CHECK-NOT: store
+// CHECK: call void @llvm.memset
+// CHECK-NOT: store
+#[no_mangle]
+pub fn memzero(data: &mut [u8]) {
+    for i in 0..data.len() {
+        data[i] = 0;
+    }
+}