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28 lines
894 B
Plaintext
28 lines
894 B
Plaintext
@node stderr
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@section @code{stderr}
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@findex stderr
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/stderr.html}
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Gnulib module: ---
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Portability problems fixed by Gnulib:
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@itemize
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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stderr is created in 32-bit mode instead of 64-bit mode: Cygwin 1.5.x.
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One workaround is to use freopen(NULL, ``r+'', stderr) on Cygwin 1.5.21
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or newer. Another is to use the gnulib ftello module and do
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ftello(stderr).
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@item
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POSIX states that a setuid application can guarantee that fd 2 is
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open, but some systems guarantee this even for non-setuid programs.
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If an application is executed with fd 2 closed, use of @code{stderr}
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can affect an unrelated file that happened to be assigned to fd 2.
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The gnulib *-safer modules may be used to guarantee that fd 2 stays
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reserved for @code{stderr}.
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@end itemize
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