http://dev.gentooexperimental.org/~flameeyes/openjdk-patches/

Index: openjdk/jdk/src/share/native/com/sun/java/util/jar/pack/unpack.cpp
===================================================================
--- openjdk.orig/jdk/src/share/native/com/sun/java/util/jar/pack/unpack.cpp
+++ openjdk/jdk/src/share/native/com/sun/java/util/jar/pack/unpack.cpp
@@ -4664,6 +4664,7 @@ void unpacker::redirect_stdio() {
 
     char *tname = tempnam(tmpdir,"#upkg");	
     sprintf(log_file_name, "%s", tname);
+    ::free(tname);
     if ((errstrm = fopen(log_file_name, "a+")) != NULL) {
       log_file = errstrm_name = saveStr(log_file_name);
       return ;