various numeric literals' tests

backend.native/tests/codegen/function/sum_3const-test.c

@@ -0,0 +1,10 @@
+extern void *resolve_symbol(const char*);
+
+int
+run_test() {
+  int (*sum3)() = resolve_symbol("kfun:sum3");
+
+  if (sum3() != 36) return 1;
+
+  return 0;
+}