diff -r efdbe9b904ad -r f96fcd9e1e1b src/share/vm/memory/blockOffsetTable.cpp
--- a/src/share/vm/memory/blockOffsetTable.cpp	Tue Feb 23 18:58:36 2016 -0500
+++ b/src/share/vm/memory/blockOffsetTable.cpp	Thu Jun 14 09:15:08 2018 -0700
@@ -560,7 +560,7 @@
     q = n;
     n += _sp->block_size(n);
     assert(n > q,
-           err_msg("Looping at n = " PTR_FORMAT " with last = " PTR_FORMAT","
+           err_msg("Looping at n = " PTR_FORMAT " with last = " PTR_FORMAT ","
                    " while querying blk_start(" PTR_FORMAT ")"
                    " on _sp = [" PTR_FORMAT "," PTR_FORMAT ")",
                    p2i(n), p2i(last), p2i(addr), p2i(_sp->bottom()), p2i(_sp->end())));