diff -r efdbe9b904ad -r f96fcd9e1e1b src/share/vm/gc_implementation/g1/g1CardCounts.cpp
--- a/src/share/vm/gc_implementation/g1/g1CardCounts.cpp	Tue Feb 23 18:58:36 2016 -0500
+++ b/src/share/vm/gc_implementation/g1/g1CardCounts.cpp	Thu Jun 14 09:15:08 2018 -0700
@@ -44,7 +44,7 @@
 void G1CardCounts::clear_range(size_t from_card_num, size_t to_card_num) {
   if (has_count_table()) {
     assert(from_card_num < to_card_num,
-           err_msg("Wrong order? from: " SIZE_FORMAT ", to: "SIZE_FORMAT,
+           err_msg("Wrong order? from: " SIZE_FORMAT ", to: " SIZE_FORMAT,
                    from_card_num, to_card_num));
     Copy::fill_to_bytes(&_card_counts[from_card_num], (to_card_num - from_card_num));
   }
@@ -87,7 +87,7 @@
   if (has_count_table()) {
     size_t card_num = ptr_2_card_num(card_ptr);
     assert(card_num < _reserved_max_card_num,
-           err_msg("Card "SIZE_FORMAT" outside of card counts table (max size "SIZE_FORMAT")",
+           err_msg("Card " SIZE_FORMAT " outside of card counts table (max size " SIZE_FORMAT ")",
                    card_num, _reserved_max_card_num));
     count = (uint) _card_counts[card_num];
     if (count < G1ConcRSHotCardLimit) {