Index: benchmark/creation/upp_cor.cc
===================================================================
--- benchmark/creation/upp_cor.cc	(revision 90152a4860529aff7214be01cd22abd37012cd19)
+++ benchmark/creation/upp_cor.cc	(revision 90152a4860529aff7214be01cd22abd37012cd19)
@@ -0,0 +1,18 @@
+#include <cstdio>
+
+#include "bench.h"
+
+_Coroutine MyCor {
+	void main() {}
+};
+
+int main(int argc, char* argv[]) {
+	BENCH(
+		for (size_t i = 0; i < n; i++) {
+			MyCor m;
+		},
+		result
+	)
+
+	printf("%llu\n", result);
+}