diff -r debb15cc04ee -r f4f0dce5d0bb src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp
--- a/src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp	Wed Mar 13 12:30:20 2019 -0700
+++ b/src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp	Wed Mar 13 21:01:56 2019 +0100
@@ -193,7 +193,6 @@
   BarrierSet* bs = BarrierSet::barrier_set();
   CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
   CardTable* ct = ctbs->card_table();
-  assert(sizeof(*ct->byte_map_base()) == sizeof(jbyte), "adjust this code");
 
   Label done;
   Label runtime;
@@ -211,7 +210,6 @@
   // storing region crossing non-NULL, is card already dirty?
 
   ExternalAddress cardtable((address) ct->byte_map_base());
-  assert(sizeof(*ct->byte_map_base()) == sizeof(jbyte), "adjust this code");
   const Register card_addr = tmp;
 
   __ lsr(card_addr, store_addr, CardTable::card_shift);
@@ -417,7 +415,6 @@
   BarrierSet* bs = BarrierSet::barrier_set();
   CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
   CardTable* ct = ctbs->card_table();
-  assert(sizeof(*ct->byte_map_base()) == sizeof(jbyte), "adjust this code");
 
   Label done;
   Label runtime;