Whenever setting (or clearing) (up to) the last bit in a char, it would "overflow" and set/clear all the bits up to it instead.
Signed-off-by: Olivier Brunel <[email protected]> --- src/libstddjb/bitarray_clearsetn.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/libstddjb/bitarray_clearsetn.c b/src/libstddjb/bitarray_clearsetn.c index b3f46f1..5fee42d 100644 --- a/src/libstddjb/bitarray_clearsetn.c +++ b/src/libstddjb/bitarray_clearsetn.c @@ -8,7 +8,7 @@ void bitarray_clearsetn (register unsigned char *s, register unsigned int a, reg b += a ; if ((a >> 3) == ((b-1) >> 3)) { - register unsigned char mask = ((1 << (a & 7)) - 1) ^ ((1 << (b & 7)) - 1) ; + register unsigned char mask = ((1 << (a & 7)) - 1) ^ ((1 << ((b & 7) ? b & 7 : 8)) - 1) ; if (h) s[a>>3] |= mask ; else s[a>>3] &= ~mask ; } else @@ -18,7 +18,7 @@ void bitarray_clearsetn (register unsigned char *s, register unsigned int a, reg if (h) s[a>>3] |= mask ; else s[a>>3] &= ~mask ; mask = h ? 0xff : 0x00 ; for (; i < b>>3 ; i++) s[i] = mask ; - mask = (1 << (b & 7)) - 1 ; + mask = (1 << ((b & 7) ? b & 7 : 8)) - 1 ; if (h) s[b>>3] |= mask ; else s[b>>3] &= ~mask ; } } -- 2.6.4
