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https://issues.apache.org/jira/browse/BCEL-202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14591163#comment-14591163
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Kaspar-David Buss commented on BCEL-202:
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It's been years since the StackMapTable has been introduced. That this still
hasn't been addressed is frankly mind-boggling.
I'd say this is actually a Blocker. The entire "Engineering" part of "Bytecode
Engineering Library" kind of falls apart when even adding a single NOP
completely breaks most programs.
> StackMapTableEntry.copy() needs to be deep; Improved support for StackMaps
> --------------------------------------------------------------------------
>
> Key: BCEL-202
> URL: https://issues.apache.org/jira/browse/BCEL-202
> Project: Commons BCEL
> Issue Type: Bug
> Reporter: Mark Roberts
> Attachments: stackmap.diff
>
>
> There are several ways a user can modify a Java class file that should cause
> BCEL to update the StackMaps automatically. Unfortunately, it does not.
> These additional methods at least allow users to take care of these issues
> for themselves.
> The patch also fixes a bug - StackMapTableEntry.copy() needs to be a deep
> copy to prevent StackMapTypes from being reused.
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