Michael Orlitzky wrote:
> This is the right way to do it. The user/system already has UMASK set
> to something generally acceptable. When you create a sensitive file,
> you mask more permission bits, create the file, and then revert the
> umask. After that, you leave everything alone.

Ok, thank you all for your comments. I implemented a minimal fix at 
#29093. People who'd like to see a warning issued in some circumstances 
or whatever are welcome to take over the ticket and make the 
improvements they find useful :-)

-- 
Marc

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