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annotate doc/posix-functions/fflush.texi @ 10876:c83dc7e8df57

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Refer to new POSIX:2008 standard.
author Bruno Haible <bruno@clisp.org>
date Sun, 14 Dec 2008 14:38:13 +0100
parents 631ce3b6e822
children bb0ceefd22dc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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1 @node fflush
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2 @section @code{fflush}
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3 @findex fflush
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4
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c83dc7e8df57 Refer to new POSIX:2008 standard.
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5 POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/fflush.html}
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6
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7 Gnulib module: fflush
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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 @item
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12 @code{fflush} followed by @code{fseek} or @code{fseeko}, applied to an input
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13 stream, should have the effect of positioning the underlying file descriptor.
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14 It doesn't do this on some platforms.
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15 @item
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16 @code{fflush} on an input stream changes the position of the stream to the
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17 end of the previous buffer, on some platforms: mingw.
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18 @item
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19 @code{fflush} on an input stream right after @code{ungetc} does not discard
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20 the @code{ungetc} buffer, on some platforms:
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21 MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, Cygwin 1.5.25-10.
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22 @end itemize
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23
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24 Portability problems not fixed by Gnulib:
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25 @itemize
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26 @item
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27 @code{fflush}, @code{ftell}, @code{ftello}, @code{fgetpos} behave incorrectly
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28 on input streams that are opened in @code{O_TEXT} mode and whose contents
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29 contains Unix line terminators (LF), on some platforms: mingw.
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30 @item
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31 On Windows platforms (excluding Cygwin), this function does not set @code{errno}
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32 upon failure.
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33 @item
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34 @code{fflush} on an input stream right after @code{ungetc} does not discard
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35 the @code{ungetc} buffer, on some platforms:
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36 AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, mingw.
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37 @end itemize