[Bug localedata/5033] locarchive does not provide fallback for mmap()

[bugdal at aerifal dot cx]

http://sourceware.org/bugzilla/show_bug.cgi?id=5033

--- Comment #4 from Rich Felker <bugdal at aerifal dot cx> 2012-02-21 22:51:54 UTC ---
Per POSIX:

The mmap() function shall be supported for the following memory objects:

  Regular files

  [SHM][X>  Shared memory objects <X]

  [TYM][X>  Typed memory objects <X]

No exception is made that says MAP_SHARED need not work for certain regular
files, so I interpret this as meaning that a system on which some filesystems
do not support MAP_SHARED is non-conformant.

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