[Bug libc/9685] __have_{sock_cloexec,pipe2} checks not valid with linux headers older than 2.6.27

[vapier at gentoo dot org]

------- Additional Comments From vapier at gentoo dot org  2009-02-15 21:44 -------
when i think about it some more, your latest statements are irrelevant.  the
problem here is that if the __ASSUME_xxx defines are not defined, then glibc
falls back to the runtime test.  as i illustrated in the original summary, this
will create a broken glibc if the linux-headers do not contain the pipe2 syscall
number.  the arch in question is irrelevant.  that means that the linux-headers
have to be very recent (and in some cases, not even available today let alone at
the time of the glibc-2.9 release).

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http://sourceware.org/bugzilla/show_bug.cgi?id=9685

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