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fix crc32 compile error, fixes #2039

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Thomas Waldmann 2017-01-14 05:06:15 +01:00
parent 9575edc446
commit ededb6f2c8
1 changed files with 2 additions and 1 deletions
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src/borg/_crc32/slice_by_8.c
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@ -350,6 +350,7 @@ uint32_t crc32_slice_by_8(const void* data, size_t length, uint32_t previousCrc3
// enabling optimization (at least -O2) automatically unrolls the inner for-loop // enabling optimization (at least -O2) automatically unrolls the inner for-loop
const size_t Unroll = 4; const size_t Unroll = 4;
const size_t BytesAtOnce = 8 * Unroll; const size_t BytesAtOnce = 8 * Unroll;
const uint8_t* currentChar;
// process 4x eight bytes at once (Slicing-by-8) // process 4x eight bytes at once (Slicing-by-8)
while (length >= BytesAtOnce) while (length >= BytesAtOnce)
@ -386,7 +387,7 @@ uint32_t crc32_slice_by_8(const void* data, size_t length, uint32_t previousCrc3
length -= BytesAtOnce; length -= BytesAtOnce;
} }
const uint8_t* currentChar = (const uint8_t*) current; currentChar = (const uint8_t*) current;
// remaining 1 to 31 bytes (standard algorithm) // remaining 1 to 31 bytes (standard algorithm)
while (length-- != 0) while (length-- != 0)
crc = (crc >> 8) ^ Crc32Lookup[0][(crc & 0xFF) ^ *currentChar++]; crc = (crc >> 8) ^ Crc32Lookup[0][(crc & 0xFF) ^ *currentChar++];