[SCM] GNU Mach branch, master, updated. v1.8-239-g0650a4e

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit 0650a4ee30e34ba039940032fdff3719c1b4b000
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Sun Dec 20 01:41:55 2020 +0100

    vm_map: Fix taking into account high bits in mask
    
    glibc's sysdeps/mach/hurd/dl-sysdep.c has been wanting to use this for
    decades.
    
    * include/string.h (ffs): New declaration.
    * vm/vm_map.c: Include <string.h>.
    (vm_map_find_entry_anywhere): Separate out high bits from mask, to
    compute the maximum offset instead of map->max_offset.
    * doc/mach.texi (vm_map): Update documentation accordingly.

-----------------------------------------------------------------------

Summary of changes:
 doc/mach.texi    |  4 ++--
 include/string.h |  2 ++
 vm/vm_map.c      | 31 +++++++++++++++++++++++++++++--
 3 files changed, 33 insertions(+), 4 deletions(-)


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