Review JDK-8010837 - TEST_BUG: java/io/FileInputStream/LargeFileAvailable.java fails intermittently

[Dan Xu]

Hi All,

In the old JVM function, os::available, it could return negative values 
because lseek() allows the file offset to be set beyond the end of a 
file. In the previous change of removing jvm functions, I wasn't aware 
of that and regardnegative values as invalid and return 0, which causes 
this test failed if it handles negative values. This fixaddressedthis 
problem and added a new testcase to ensure the correctbehaviour when 
available() encounters negative values.

Webrev: http://cr.openjdk.java.net/~dxu/8010837/webrev/

Thanks,

-Dan