diff -r 103d1261f1f4 -r db357034b763 src/share/vm/jfr/writers/jfrEventWriterHost.inline.hpp
--- a/src/share/vm/jfr/writers/jfrEventWriterHost.inline.hpp	Fri Dec 06 12:42:29 2019 +0100
+++ b/src/share/vm/jfr/writers/jfrEventWriterHost.inline.hpp	Tue Jun 16 11:03:04 2020 +0800
@@ -49,7 +49,7 @@
 inline intptr_t EventWriterHost<BE, IE, WriterPolicyImpl>::end_write(void) {
   assert(this->is_acquired(),
     "state corruption, calling end with writer with non-acquired state!");
-  return this->is_valid() ? this->used_offset() : 0;
+  return this->is_valid() ? (intptr_t)this->used_offset() : 0;
 }
 
 template <typename BE, typename IE, typename WriterPolicyImpl>