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@node shmat
@section @code{shmat}
@findex shmat
POSIX specification: @url{http://www.opengroup.org/susv3xsh/shmat.html}
Gnulib module: ---
Portability problems fixed by Gnulib:
@itemize
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
mingw, BeOS.
@item
Attempts to @code{shmat} into a previously malloc-ed region fail on SunOS 4,
with @code{errno} set to @code{EINVAL}, even if there is an @code{munmap} call
in between.
@item
On Linux, the flag @code{SHM_REMAP} is needed in order to force @code{shmat}
to replace existing memory mappings in the specify address range. On other
platforms, it is not needed.
@end itemize
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