diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-12-20 01:41:55 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-12-20 01:43:31 +0100 |
| commit | 0650a4ee30e34ba039940032fdff3719c1b4b000 (patch) | |
| tree | 4f81613aee6f2b8286a751b0b1bd92d86d164fe7 /include | |
| parent | 3c0b306d01a95e17579d938d8e9e8c527c251a4a (diff) | |
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.
Diffstat (limited to 'include')
| -rw-r--r-- | include/string.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/string.h b/include/string.h index c31b4292..cddcbeb9 100644 --- a/include/string.h +++ b/include/string.h @@ -54,4 +54,6 @@ extern size_t strlen (const char *s) __attribute__ ((pure)); extern char *strstr(const char *haystack, const char *needle); +extern int ffs(int i); + #endif /* _MACH_SA_SYS_STRING_H_ */ |