[BCEL-151] Code attribute size not updated

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 6.8.1
• Fix Version/s: 6.0
• Component/s: Main
• External issue URL: https://issues.apache.org/bugzilla/show_bug.cgi?id=50922
• Severity: normal
• Priority: P2
• External issue ID: 50922
• Assignee: Apache Commons Developers
• Reporter: Glen Chatfield
• Created: 13/Mar/11 12:35
• Updated: 07/Dec/23 21:04
• Resolved: 13/Mar/11 14:08

Description

The code attribute length when dumped is not updated, and as such will write the old size of the attribute should the size of the actual byte code change.

A possible fix is adding:
"setLength(calculateLength());"

to the first line of:
org.apache.bcel.classfile.Code.dump(DataOutputStream) throws IOException

When trying to execute code that has this error, it throws a ClassFormatException, Wrong code segment length (Should there be no other formatting errors with the code).