9.940 shmat

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/functions/shmat.html

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: mingw, MSVC 9, BeOS.
• Attempts to shmat into a previously malloc-ed region fail on SunOS 4, with errno set to EINVAL, even if there is an munmap call in between.
• On Linux, the flag SHM_REMAP is needed in order to force shmat to replace existing memory mappings in the specify address range. On other platforms, it is not needed.