[lucy-issues] [jira] [Updated] (LUCY-234) Brittle object struct ABI

["Marvin Humphrey (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCY-234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marvin Humphrey updated LUCY-234:
---------------------------------

    Attachment: struct_abi_demo.patch

Attach proof of concept patch.

This patch was committed in SVN on an experimental branch.  I plan
to delete that branch from our Git repo for the sake of tidiness so I'm
archiving the changes here.
                
> Brittle object struct ABI
> -------------------------
>
>                 Key: LUCY-234
>                 URL: https://issues.apache.org/jira/browse/LUCY-234
>             Project: Lucy
>          Issue Type: Bug
>          Components: Clownfish
>            Reporter: Marvin Humphrey
>         Attachments: member_offset_constant.c, member_offset_variable.c, struct_abi_demo.patch
>
>
> If an upstream parcel adds, removes or rearranges member variables,
> downstream extensions that build on the affected classes will break.

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