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/*
* @test
* @bug 8028780
* @summary JDK KRB5 module throws OutOfMemoryError when CCache is corrupt
* @modules java.security.jgss/sun.security.krb5
* java.security.jgss/sun.security.krb5.internal.ccache
* @run main/othervm -Xmx8m CorruptedCC
*/
import java.nio.file.Files;
import java.nio.file.Paths;
import sun.security.krb5.internal.ccache.CredentialsCache;
public class CorruptedCC {
public static void main(String[] args) throws Exception {
for (int i=0; i<TimeInCCache.ccache.length; i++) {
byte old = TimeInCCache.ccache[i];
TimeInCCache.ccache[i] = 0x7f;
Files.write(Paths.get("tmpcc"), TimeInCCache.ccache);
// The next line will return null for I/O issues. That's OK.
CredentialsCache.getInstance("tmpcc");
TimeInCCache.ccache[i] = old;
}
}
}