--- old/src/hotspot/share/gc/serial/defNewGeneration.cpp	2019-11-14 15:57:38.788796772 +0100
+++ new/src/hotspot/share/gc/serial/defNewGeneration.cpp	2019-11-14 15:57:38.433785437 +0100
@@ -392,7 +392,7 @@
   size_t desired_new_size = adjust_for_thread_increase(new_size_candidate, new_size_before, alignment);
 
   // Adjust new generation size
-  desired_new_size = MAX2(MIN2(desired_new_size, max_new_size), min_new_size);
+  desired_new_size = clamp(desired_new_size, min_new_size, max_new_size);
   assert(desired_new_size <= max_new_size, "just checking");
 
   bool changed = false;