--- old/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2020-02-19 11:43:08.266457763 +0100
+++ new/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2020-02-19 11:43:07.851444798 +0100
@@ -1205,8 +1205,6 @@
       ClassLoaderDataGraph::purge();
     }
 
-    _g1h->resize_heap_if_necessary();
-
     compute_new_sizes();
 
     verify_during_pause(G1HeapVerifier::G1VerifyRemark, VerifyOption_G1UsePrevMarking, "Remark after");