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From "Gregory Shimansky (JIRA)" <j...@apache.org>
Subject [jira] Closed: (HARMONY-2872) [drlvm][classloader] Improved class file format parser
Date Fri, 22 Jun 2007 13:23:26 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-2872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gregory Shimansky closed HARMONY-2872.
--------------------------------------


No response, assuming ok.

> [drlvm][classloader] Improved class file format parser
> ------------------------------------------------------
>
>                 Key: HARMONY-2872
>                 URL: https://issues.apache.org/jira/browse/HARMONY-2872
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>            Reporter: Vera Volynets
>            Assignee: Gregory Shimansky
>         Attachments: Class_file_parser_improvements_20061225.patch, Test.java
>
>
> I suggest following improvements which I made to Class file parser.
> 1) Introduced new Tag CONSTANT_UnusedEntry. This tag is needed to detect reference from
lcd2_w to second entry of double or long which shouldn't be used according to specification.
If verifier is turned off, the second element will be treated as regular CONSTANT_Double or
CONSTANT_Long.
> 2) Improved access flags parsing, reset flags which is used for Java 5.0 if class file
has version less than 49.
> 3) Improved exception messages for several class format errors.
> 4) Made preparation for field and method name check depending on class file version.
> 5) Implemented parsing of RuntimeInvisibleAnnotations and RuntimeInvisibleParameterAnnotations
attributes. Introduced new command line flag "-Xinvisible" to retain these annotations.
> 6) Add future changes to TODO list.
> 7) Checked UTF_8 string correctness
> Patch is attached.

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