diff -r efdbe9b904ad -r f96fcd9e1e1b src/share/vm/gc_implementation/g1/g1AllocRegion.cpp
--- a/src/share/vm/gc_implementation/g1/g1AllocRegion.cpp	Tue Feb 23 18:58:36 2016 -0500
+++ b/src/share/vm/gc_implementation/g1/g1AllocRegion.cpp	Thu Jun 14 09:15:08 2018 -0700
@@ -140,7 +140,7 @@
 }
 
 void G1AllocRegion::fill_in_ext_msg(ar_ext_msg* msg, const char* message) {
-  msg->append("[%s] %s c: %u b: %s r: "PTR_FORMAT" u: "SIZE_FORMAT,
+  msg->append("[%s] %s c: %u b: %s r: " PTR_FORMAT " u: " SIZE_FORMAT,
               _name, message, _count, BOOL_TO_STR(_bot_updates),
               p2i(_alloc_region), _used_bytes_before);
 }
@@ -217,7 +217,7 @@
 
     if (G1_ALLOC_REGION_TRACING > 1) {
       if (result != NULL) {
-        jio_snprintf(rest_buffer, buffer_length, SIZE_FORMAT" "PTR_FORMAT,
+        jio_snprintf(rest_buffer, buffer_length, SIZE_FORMAT " " PTR_FORMAT,
                      word_size, result);
       } else if (word_size != 0) {
         jio_snprintf(rest_buffer, buffer_length, SIZE_FORMAT, word_size);