src/os/posix/vm/os_posix.cpp

*** 1,7 ****
  /*
! * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
! * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 164,173 ****
--- 164,183 ----
    }
  
    return aligned_base;
  }
  
+ int os::vsnprintf(char* buf, size_t len, const char* fmt, va_list args) {
+   int result = ::vsnprintf(buf, len, fmt, args);
+   // If an encoding error occurred (result < 0) then it's not clear
+   // whether the buffer is NUL terminated, so ensure it is.
+   if ((result < 0) && (len > 0)) {
+     buf[len - 1] = '\0';
+   }
+   return result;
+ }
+ 
  void os::Posix::print_load_average(outputStream* st) {
    st->print("load average:");
    double loadavg[3];
    os::loadavg(loadavg, 3);
    st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]);