http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-July/027431.html

I tried to build jdk10-hs on Fedora 26 with gcc-7.1.1-3.fc26.x86_64,
then I encountered some build warnings.


details:

1:
/home/ysuenaga/OpenJDK/jdk10-hs/hotspot/src/share/vm/code/dependencies.cpp:
In static member function 'static void
Dependencies::write_dependency_to(xmlStream*, Dependencies::DepType,
GrowableArray<Dependencies::DepArgument>*, Klass*)':
/home/ysuenaga/OpenJDK/jdk10-hs/hotspot/src/share/vm/code/dependencies.cpp:714:6:
warning: '%d' directive writing between 1 and 10 bytes into a region
of size 9 [-Wformat-overflow=]
 void Dependencies::write_dependency_to(xmlStream* xtty,
      ^~~~~~~~~~~~
/home/ysuenaga/OpenJDK/jdk10-hs/hotspot/src/share/vm/code/dependencies.cpp:714:6:
note: directive argument in the range [0, 2147483647]
/home/ysuenaga/OpenJDK/jdk10-hs/hotspot/src/share/vm/code/dependencies.cpp:745:27:
note: 'sprintf' output between 3 and 12 bytes into a destination of
size 10
       char xn[10]; sprintf(xn, "x%d", j);
                    ~~~~~~~^~~~~~~~~~~~~~

2:
/home/ysuenaga/OpenJDK/jdk10-hs/hotspot/src/share/vm/logging/logFileOutput.cpp:
In static member function 'static void
LogFileOutput::set_file_name_parameters(jlong)':
/home/ysuenaga/OpenJDK/jdk10-hs/hotspot/src/share/vm/logging/logFileOutput.cpp:61:99:
warning: format not a string literal, format string not checked
[-Wformat-nonliteral]
   res = (int)strftime(_vm_start_time_str, sizeof(_vm_start_time_str),
TimestampFormat, &local_time);

                            ^