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annotate doc/posix-functions/stdin.texi @ 15607:6355dc4626b5

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doc: Update regarding MSVC 9. * doc/gnulib-intro.texi (Target Platforms): Classify MSVC as "rarely tested". * doc/posix-functions/*.texi: Update with info about MSVC 9. * doc/posix-headers/*.texi: Likewise. * doc/pastposix-functions/*.texi: Likewise. * doc/glibc-functions/*.texi: Likewise. * doc/glibc-headers/*.texi: Likewise.
author Bruno Haible <bruno@clisp.org>
date Sun, 11 Sep 2011 21:56:17 +0200
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1 @node stdin
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2 @section @code{stdin}
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3 @findex stdin
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4
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5 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/stdin.html}
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6
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7 Gnulib module: ---
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8
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9 Portability problems fixed by Gnulib:
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10 @itemize
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11 @end itemize
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12
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13 Portability problems not fixed by Gnulib:
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14 @itemize
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15 @item
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16 stdin is created in 32-bit mode instead of 64-bit mode: Cygwin 1.5.x.
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17 One workaround is to use freopen(NULL, ``r'', stdin) on Cygwin 1.5.21
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18 or newer. Another is to use the gnulib ftello module and do
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19 ftello(stdin).
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20 @item
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21 POSIX states that a setuid application can guarantee that fd 0 is
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22 open, but some systems guarantee this even for non-setuid programs.
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23 If an application is executed with fd 0 closed, use of @code{stdin}
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24 can affect an unrelated file that happened to be assigned to fd 0.
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25 The gnulib *-safer modules may be used to guarantee that fd 0 stays
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26 reserved for @code{stdin}.
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27 @end itemize