This happens with GCC 6.3.0:

/home/buildbot/worker/build-jdkX-linux/build/src/hotspot/share/jfr/recorder/service/jfrOptionSet.cpp: In function 'bool ensure_gteq(Argument&, jlong)':
/home/buildbot/worker/build-jdkX-linux/build/src/hotspot/share/jfr/recorder/service/jfrOptionSet.cpp:622:38: error: the value of 'lower_than_msg' is not usable in a constant expression
     log_out_of_range_value<Argument, lower_than_msg>(memory_argument, value);
                                      ^~~~~~~~~~~~~~
/home/buildbot/worker/build-jdkX-linux/build/src/hotspot/share/jfr/recorder/service/jfrOptionSet.cpp:397:19: note: 'lower_than_msg' was not declared 'constexpr'
 static const char lower_than_msg[] = "This value is lower than the minimum size required ";
                   ^~~~~~~~~~~~~~
/home/buildbot/worker/build-jdkX-linux/build/src/hotspot/share/jfr/recorder/service/jfrOptionSet.cpp: In function 'bool ensure_lteq(Argument&, jlong)':
/home/buildbot/worker/build-jdkX-linux/build/src/hotspot/share/jfr/recorder/service/jfrOptionSet.cpp:657:38: error: the value of 'higher_than_msg' is not usable in a constant expression
     log_out_of_range_value<Argument, higher_than_msg>(memory_argument, value);
                                      ^~~~~~~~~~~~~~~
/home/buildbot/worker/build-jdkX-linux/build/src/hotspot/share/jfr/recorder/service/jfrOptionSet.cpp:396:19: note: 'higher_than_msg' was not declared 'constexpr'
 static const char higher_than_msg[] = "This value is higher than the maximum size limited ";
                   ^~~~~~~~~~~~~~~