1 files changed, 7 insertions, 0 deletions
diff --git a/src/rt/rust_builtin.cpp b/src/rt/rust_builtin.cpp
index acbb10a4bf4..596a05cc31b 100644
--- a/src/rt/rust_builtin.cpp
+++ b/src/rt/rust_builtin.cpp
@@ -191,6 +191,13 @@ rand_free(rust_task *task, randctx *rctx)
     task->free(rctx);
 }
 
+extern "C" CDECL void upcall_sleep(rust_task *task, size_t time_in_us);
+
+extern "C" CDECL void
+task_sleep(rust_task *task, size_t time_in_us) {
+    upcall_sleep(task, time_in_us);
+}
+
 //
 // Local Variables:
 // mode: C++