@node shmat
@subsection @code{shmat}
@findex shmat

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/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, MSVC 14, Android 7.1.
@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
