Change vfork() to posix_spawn()?

[Erik Cederstrand]

Hello hackers,

I'm looking through the Clang Analyzer scans on http://scan.freebsd.your.org/freebsd-head looking for false positives to report back to LLVM. There are quite a list of reports suggesting to change vfork() calls to posix_spawn(). Example from /bin/rpc: http://scan.freebsd.your.org/freebsd-head/bin.rcp/2012-09-12-amd64/report-nsOV80.html#EndPath

I know nothing about this but I can see fork and posix_spawn have been discussed on this list previously. Is this a legitimate warning (in this case and in general in FreeBSD base)?

Thanks,
Erik