--- old/src/hotspot/share/gc/g1/g1Allocator.cpp	2019-11-14 15:57:32.059581915 +0100
+++ new/src/hotspot/share/gc/g1/g1Allocator.cpp	2019-11-14 15:57:31.716570963 +0100
@@ -194,7 +194,7 @@
   if (hr == NULL) {
     return max_tlab;
   } else {
-    return MIN2(MAX2(hr->free(), (size_t) MinTLABSize), max_tlab);
+    return clamp(hr->free(), MinTLABSize, max_tlab);
   }
 }