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@node dup3
@subsection @code{dup3}
@findex dup3

Documentation:@* @uref{https://www.kernel.org/doc/man-pages/online/pages/man2/dup3.2.html,,man dup3}

Gnulib module: dup3

Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on many non-glibc platforms:
glibc 2.8, macOS 11.1, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 11.3, Cygwin 1.7.1, mingw, MSVC 14, Android 4.4.

@item
This function can crash on some platforms:
Cygwin 1.7.25.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize