2 files changed, 2 insertions, 8 deletions
diff --git a/compiler/rustc_data_structures/src/lib.rs b/compiler/rustc_data_structures/src/lib.rs
index ea02a73c422..3e93fe9a11f 100644
--- a/compiler/rustc_data_structures/src/lib.rs
+++ b/compiler/rustc_data_structures/src/lib.rs
@@ -37,6 +37,8 @@ extern crate cfg_if;
 #[macro_use]
 extern crate rustc_macros;
 
+pub use rustc_index::static_assert_size;
+
 #[inline(never)]
 #[cold]
 pub fn cold_path<F: FnOnce() -> R, R>(f: F) -> R {
diff --git a/compiler/rustc_data_structures/src/macros.rs b/compiler/rustc_data_structures/src/macros.rs
index 48dfbba7504..e05491f6ff6 100644
--- a/compiler/rustc_data_structures/src/macros.rs
+++ b/compiler/rustc_data_structures/src/macros.rs
@@ -1,11 +1,3 @@
-/// Type size assertion. The first argument is a type and the second argument is its expected size.
-#[macro_export]
-macro_rules! static_assert_size {
-    ($ty:ty, $size:expr) => {
-        const _: [(); $size] = [(); ::std::mem::size_of::<$ty>()];
-    };
-}
-
 #[macro_export]
 macro_rules! enum_from_u32 {
     ($(#[$attr:meta])* pub enum $name:ident {