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@node limits.h
@section @file{limits.h}
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html}
Gnulib module: gethostname
Portability problems fixed by Gnulib:
@itemize
@item
The @code{HOST_NAME_MAX} macro is not defined on some platforms:
Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, AIX 5.1, HP-UX 11,
IRIX 6.5, OSF/1 5.1, Solaris 11 2011-11, Cygwin 1.5.x, mingw, MSVC 14, Interix 3.5, BeOS.
@item
Macros like @code{CHAR_WIDTH} are not defined on some platforms:
glibc 2.24, many others.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
The macros @code{LLONG_MIN}, @code{LLONG_MAX}, @code{ULLONG_MAX} are not
defined on some platforms:
AIX 5.1, HP-UX 11, IRIX 6.5, OpenVMS, OSF/1 5.1 with gcc.
@item
The macros @code{WORD_BIT}, @code{LONG_BIT} are not defined on some platforms:
glibc 2.11 without @code{-D_GNU_SOURCE}, Cygwin, mingw, MSVC 14.
@item
The macro @code{SSIZE_MAX} has the wrong type,
albeit with the correct value:
32-bit glibc 2.24 (on some architectures), Cygwin 2.5.2.
@item
The macro @code{SSIZE_MAX} is not defined on some platforms:
MSVC 14.
@end itemize
For @code{PATH_MAX}, Gnulib provides a module @code{pathmax} with a header
file @code{"pathmax.h"}. It defines @code{PATH_MAX} to a constant on
platforms with a file name length limit.
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