diff --git a/tests/rustdoc/inline_cross/auxiliary/const-fn.rs b/tests/rustdoc/inline_cross/auxiliary/const-fn.rs
new file mode 100644
index 000000000000..26332b419b6d
--- /dev/null
+++ b/tests/rustdoc/inline_cross/auxiliary/const-fn.rs
@@ -0,0 +1,5 @@
+#![feature(effects)]
+
+pub const fn load() -> i32 {
+    0
+}
diff --git a/tests/rustdoc/inline_cross/const-fn.rs b/tests/rustdoc/inline_cross/const-fn.rs
new file mode 100644
index 000000000000..24934b873c25
--- /dev/null
+++ b/tests/rustdoc/inline_cross/const-fn.rs
@@ -0,0 +1,10 @@
+// Regression test for issue #116629.
+// Check that we render the correct generic params of const fn
+
+// aux-crate:const_fn=const-fn.rs
+// edition: 2021
+#![crate_name = "user"]
+
+// @has user/fn.load.html
+// @has - '//pre[@class="rust item-decl"]' "pub const fn load() -> i32"
+pub use const_fn::load;