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From: Wietse Venema (wietseporcupine.org)
Date: Tue Aug 19 2008 - 06:07:59 CDT
> If Postfix (or qmail, or whatever application) claims to support a
> particular operating system (Linux, Solaris - rather than POSIX), then
> it has to make proper assumptions to work in that possibly different
> environment that Postfix claims to support, rather than blame the OS for
> change, development, its developers for design decisions, or whatever.
By this reasoning, I would have to evaluate kernel implementations
forever, for all the supported systems, just in case someone decides
to change the semantics of a system call and while still claiming
that link(2) is POSIX conformant.
Likewise, I would have to evaluate ANSI C environments and ensure
that some implementation does not introduce a change.
That is obviously not practical.