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* m4/iswblank.m4 (gl_FUNC_ISWBLANK): Require gl_USE_SYSTEM_EXTENSIONS. * modules/iswblank (Dependencies): Add 'extensions'. * doc/posix-functions/iswblank.texi: Document the glibc problem.
31 lines
800 B
Plaintext
31 lines
800 B
Plaintext
@node iswblank
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@section @code{iswblank}
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@findex iswblank
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/iswblank.html}
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Gnulib module: iswblank
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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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AIX 4.3.2, IRIX 6.5, OSF/1 5.1, Solaris 9, mingw.
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@item
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This function is declared but not defined on some platforms:
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IRIX 6.5.30.
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@item
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This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
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glibc 2.8.
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@item
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This function returns 0 for all possible arguments on some platforms:
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Linux libc5.
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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 AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
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accommodate all Unicode characters.
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@end itemize
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