--- a/src/hotspot/share/runtime/globals.hpp	Thu Nov 08 15:02:50 2018 +0100
+++ b/src/hotspot/share/runtime/globals.hpp	Thu Nov 08 16:23:55 2018 +0100
@@ -1264,6 +1264,10 @@
           "If an error occurs, save the error data to this file "           \
           "[default: ./hs_err_pid%p.log] (%p replaced with pid)")           \
                                                                             \
+  product(bool, ExtensiveErrorReports,                                      \
+                 PRODUCT_ONLY(false) NOT_PRODUCT(true),                     \
+                 "Error reports are more extensive.")                       \
+                                                                            \
   product(bool, DisplayVMOutputToStderr, false,                             \
           "If DisplayVMOutput is true, display all VM output to stderr")    \
                                                                             \