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eedb2b7b21
* lib/stdio.in.h (ftello): Test HAVE_DECL_FTELLO, not HAVE_FTELLO. * m4/ftello.m4 (gl_FUNC_FTELLO): Test whether ftello is declared. * m4/stdio_h.m4 (gl_STDIO_H_DEFAULTS): Initialize HAVE_DECL_FTELLO. * modules/stdio (Makefile.am): Substitute HAVE_DECL_FTELLO. * doc/posix-functions/ftello.texi: Mention the OSF/1 5.1 problem.
45 lines
1.4 KiB
Plaintext
45 lines
1.4 KiB
Plaintext
@node ftello
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@section @code{ftello}
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@findex ftello
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/ftello.html}
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Gnulib module: ftello
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Portability problems fixed by Gnulib:
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@itemize
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@item
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This function is missing on some platforms:
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IRIX 5.3, OSF/1 4.0, Solaris 2.5.1, mingw.
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@item
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The declaration of @code{ftello} in @code{<stdio.h>} is not enabled by default
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on some platforms:
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glibc 2.3.6, OSF/1 5.1.
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@item
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This function produces incorrect results after @code{putc} that followed a
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@code{getc} call that reached EOF on some platforms:
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Solaris 11 2010-11.
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@item
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This function fails on seekable stdin, stdout, and stderr: cygwin <= 1.5.24.
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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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On platforms where @code{off_t} is a 32-bit type, @code{ftello} does not work
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correctly with files larger than 2 GB. The fix is to use the
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@code{AC_SYS_LARGEFILE} macro.
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@item
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This function produces incorrect results immediately after @code{fseek} on some
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platforms:
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HP-UX 11.
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@item
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@code{fflush}, @code{ftell}, @code{ftello}, @code{fgetpos} behave incorrectly
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on input streams that are opened in @code{O_TEXT} mode and whose contents
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contains Unix line terminators (LF), on some platforms: mingw.
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@item
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On platforms where @code{off_t} is a 64-bit type, but @code{fseeko} is
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not present, stream operations on files larger than 2 GB silently do
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the wrong thing. This affects BSD/OS, which is mostly obsolete.
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@end itemize
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