CODEWITHSUNDEEP
wixburn
kthieling
kthieling

Reputation: 248

burn.ancestors in wix 3.9

I recently upgraded to the latest stable Wix 3.9 from 3.8. Now when I run a bundle upgrade against a bundle that was built using 3.8, 3.9 passes a command line argument of "-burn.ancestors={some guid}". In the log I see a message like this: "w002: Unknown burn internal command-line switch encountered: 'burn.ancestors={some guid}". The upgrade appears to go through the normal processes after that, so my question is this: What does this argument do, and is there any need for concern when seeing this message?

This message does not come up in the log if upgrading a bundle that was built with 3.9.

Upvotes: 1

Views: 187

Answers (1)

Sean Hall
Sean Hall

Reputation: 7878

There is no need for concern when seeing Unknown burn internal command-line switch encountered. As features are added to the Burn engine, command line parameters will be added. Command line parameters like burn.ancestors are passed to all child bundles, since Burn doesn't know which version of Burn is in the child bundle.

This switch was added as a part of a huge pull request from Microsoft that is supposed to address many issues described in issue 4242. It appears to be used for infinite loop detection.

Upvotes: 2

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