diff -r 9a491d1be90f -r 51173444fdd5 hotspot/src/share/vm/gc/shared/gcId.cpp
--- a/hotspot/src/share/vm/gc/shared/gcId.cpp	Mon Oct 19 15:21:01 2015 +0200
+++ b/hotspot/src/share/vm/gc/shared/gcId.cpp	Tue Oct 20 14:00:00 2015 +0200
@@ -60,12 +60,12 @@
 }
 
 GCIdMarkAndRestore::GCIdMarkAndRestore() : _gc_id(GCId::create()) {
-  _previous_gc_id = GCId::current(); // will assert that the GC Id is not undefined
+  _previous_gc_id = GCId::current_raw();
   currentNamedthread()->set_gc_id(_gc_id);
 }
 
 GCIdMarkAndRestore::GCIdMarkAndRestore(uint gc_id) : _gc_id(gc_id) {
-  _previous_gc_id = GCId::current(); // will assert that the GC Id is not undefinied
+  _previous_gc_id = GCId::current_raw();
   currentNamedthread()->set_gc_id(_gc_id);
 }