mtime changeable on immutable files (a bug, isn't it?)

[Thomas Habets]

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You can touch(1) an immutable file, which changes its mtime. Since you can't
change the permission bits of the inode, you shouldn't be able to change the
mtime, correct?

I pointed this out in september of 1999, including a patch that fixes it.
I got no reply answering if this was correct behavior or a bug back then, I'd
appreciate a reply now.

(please CC any reply to me since I'm not on the list)

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