--- old/src/hotspot/share/gc/g1/g1OopClosures.cpp	2018-10-25 11:37:25.814447149 +0200
+++ new/src/hotspot/share/gc/g1/g1OopClosures.cpp	2018-10-25 11:37:25.392434147 +0200
@@ -38,7 +38,7 @@
 { }
 
 G1ScanClosureBase::G1ScanClosureBase(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state) :
-  _g1h(g1h), _par_scan_state(par_scan_state), _from_is_young(true)
+  _g1h(g1h), _par_scan_state(par_scan_state)
 { }
 
 void G1CLDScanClosure::do_cld(ClassLoaderData* cld) {