1 files changed, 46 insertions, 0 deletions

diff --git a/tests/ui/abi/issues/issue-62350-sysv-neg-reg-counts.rs b/tests/ui/abi/issues/issue-62350-sysv-neg-reg-counts.rs
new file mode 100644
index 000000000..29b240518
--- /dev/null
+++ b/tests/ui/abi/issues/issue-62350-sysv-neg-reg-counts.rs
@@ -0,0 +1,46 @@
+// run-pass
+#![allow(dead_code)]
+#![allow(improper_ctypes)]
+
+// ignore-wasm32-bare no libc to test ffi with
+
+#[derive(Copy, Clone)]
+pub struct QuadFloats {
+    a: f32,
+    b: f32,
+    c: f32,
+    d: f32,
+}
+
+mod rustrt {
+    use super::QuadFloats;
+
+    #[link(name = "rust_test_helpers", kind = "static")]
+    extern "C" {
+        pub fn get_c_exhaust_sysv64_ints(
+            _: *const (),
+            _: *const (),
+            _: *const (),
+            _: *const (),
+            _: *const (),
+            _: *const (),
+            _: *const (),
+            h: QuadFloats,
+        ) -> f32;
+    }
+}
+
+fn test() {
+    unsafe {
+        let null = std::ptr::null();
+        let q = QuadFloats { a: 10.2, b: 20.3, c: 30.4, d: 40.5 };
+        assert_eq!(
+            rustrt::get_c_exhaust_sysv64_ints(null, null, null, null, null, null, null, q),
+            q.c,
+        );
+    }
+}
+
+pub fn main() {
+    test();
+}