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bitstring: fix ff_area() when start!=0

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commit 84e2ae64c5 introduced an error in the ff*_area_at
functions for nonzero start parameters when the bit range sought was
found immediately. It mistakenly replaced '_value = _start' with
'_value = 0' in initialization. Undo that mistake.

Reported by:	markj
Reviewed by:	markj
Tested by:	markj
Fixes:	84e2ae64c5 vm_reserv: use enhanced bitstring for popmaps
Differential Revision:	https://reviews.freebsd.org/D35157
This commit is contained in:
Doug Moore 2022-05-10 11:53:52 -05:00
parent 1cb8e38e4b
commit 6e7a585348
1 changed files with 1 additions and 1 deletions
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2
sys/sys/bitstring.h
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@ -305,7 +305,7 @@ bit_ff_area_at(bitstr_t *_bitstr, int _start, int _nbits, int _size,
_mask = _match ? _BITSTR_MASK : 0;
_maxshft = _bit_idx(_size - 1) == 0 ? _size : (int)_BITSTR_BITS;
_value = 0;
_value = _start;
_curbitstr = _bitstr + _bit_idx(_start);
_test = ~(_BITSTR_MASK << _bit_offset(_start));
for (_last = _size - 1, _test |= _mask ^ *_curbitstr;