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From "Ivan Popov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-3081) [drlvm] support option -Xfuture for compatibility with RI
Date Tue, 30 Jan 2007 09:31:33 GMT
[drlvm] support option -Xfuture for compatibility with RI
---------------------------------------------------------

                 Key: HARMONY-3081
                 URL: https://issues.apache.org/jira/browse/HARMONY-3081
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
         Environment: Windows/ia32, Linux/ia32
            Reporter: Ivan Popov
            Priority: Minor


J2SE documentation for java launcher [1] describes option -Xfuture:

-Xfuture
Perform strict class-file format checks. For purposes of backwards compatibility, the default
format checks performed by the Java 2 SDK's virtual machine are no stricter than the checks
performed by 1.1.x versions of the JDK software. The -Xfuture flag turns on stricter class-file
format checks that enforce closer conformance to the class-file format specification. Developers
are encouraged to use this flag when developing new code because the stricter checks will
become the default in future releases of the Java application launcher.

But DRLVM rejects this option:

> java -Xfuture HelloWorld
Unknown option -Xfuture
Use java -help to get help on command line options

Since developers are encouraged to use this option, this may prevents them from using Harmony/DRLVM
in their work. It makes sense to enable this option in DRLVM.

[1] http://java.sun.com/j2se/1.5.0/docs/tooldocs/windows/java.html

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