The Java_sun_nio_fs_LinuxNativeDispatcher_getlinelen function calls the free function without including <stdlib.h>. This results in an implicit function declarations, and some compilers no longer support that by default, leading to a build failure.

Per the comment in the file, this function was introduced in the backport of JDK-8229872 from JDK 11, so this bug is specific to jdk8u.

Related to:

  <https://fedoraproject.org/wiki/Changes/PortingToModernC>
  <https://fedoraproject.org/wiki/Toolchain/PortingToModernC>