1 files changed, 12 insertions, 0 deletions
diff --git a/tests/codegen-llvm/vec-iter-collect-len.rs b/tests/codegen-llvm/vec-iter-collect-len.rs
new file mode 100644
index 00000000000..807548ef883
--- /dev/null
+++ b/tests/codegen-llvm/vec-iter-collect-len.rs
@@ -0,0 +1,12 @@
+//@ compile-flags: -Copt-level=3
+#![crate_type = "lib"]
+
+#[no_mangle]
+pub fn get_len() -> usize {
+    // CHECK-LABEL: @get_len
+    // CHECK-NEXT: start:
+    // CHECK-NEXT: ; call __rustc::__rust_no_alloc_shim_is_unstable_v2
+    // CHECK-NEXT: tail call void @_R{{.+}}__rust_no_alloc_shim_is_unstable_v2()
+    // CHECK-NEXT: ret i{{[0-9]+}} 3
+    [1, 2, 3].iter().collect::<Vec<_>>().len()
+}