diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/lz4hc.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c index fbcec98..1880d53 100644 --- a/lib/lz4hc.c +++ b/lib/lz4hc.c @@ -161,17 +161,21 @@ static unsigned LZ4HC_countPattern(const BYTE* ip, const BYTE* const iEnd, U32 c return (unsigned)(ip - iStart); } +/* LZ4HC_reverseCountPattern() : + * pattern must be a sample of repetitive pattern of length 1, 2 or 4 (but not 3!) + * read using natural platform endianess */ static unsigned LZ4HC_reverseCountPattern(const BYTE* ip, const BYTE* const iLow, U32 pattern) { const BYTE* const iStart = ip; - while (likely(ip>=iLow+4)) { + while (likely(ip >= iLow+4)) { if (LZ4_read32(ip-4) != pattern) break; ip -= 4; } while (likely(ip>iLow)) { - if (ip[-1] != (BYTE)pattern) break; - ip--; + const BYTE* bytePtr = (const BYTE*)(&pattern) + 3; /* works for any endianess */ + if (ip[-1] != *bytePtr) break; + ip--; bytePtr--; } return (unsigned)(iStart - ip); |