allow `#[rustc_align_static(N)]` on `static`s

We need a different attribute than `rustc_align` because unstable attributes are
tied to their feature (we can't have two unstable features use the same
unstable attribute). Otherwise this uses all of the same infrastructure
as `#[rustc_align]`.

1 files changed, 26 insertions, 0 deletions

diff --git a/tests/ui/static/static-align.rs b/tests/ui/static/static-align.rs
new file mode 100644
index 00000000000..93241db09f9
--- /dev/null
+++ b/tests/ui/static/static-align.rs
@@ -0,0 +1,26 @@
+//@ run-pass
+#![feature(static_align)]
+
+#[rustc_align_static(64)]
+static A: u8 = 0;
+
+#[rustc_align_static(64)]
+static B: u8 = 0;
+
+#[rustc_align_static(128)]
+#[no_mangle]
+static EXPORTED: u64 = 0;
+
+unsafe extern "C" {
+    #[rustc_align_static(128)]
+    #[link_name = "EXPORTED"]
+    static C: u64;
+}
+
+fn main() {
+    assert!(core::ptr::from_ref(&A).addr().is_multiple_of(64));
+    assert!(core::ptr::from_ref(&B).addr().is_multiple_of(64));
+
+    assert!(core::ptr::from_ref(&EXPORTED).addr().is_multiple_of(128));
+    unsafe { assert!(core::ptr::from_ref(&C).addr().is_multiple_of(128)) };
+}