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fix memcpy with same src and dest (Peter Klotz)

pull/2/head
weidai 2010-08-03 20:28:10 +00:00
parent 05e42a01d9
commit 79ed03344b
1 changed files with 2 additions and 1 deletions
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3
iterhash.cpp
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@ -66,7 +66,8 @@ template <class T, class BASE> void IteratedHashBase<T, BASE>::Update(const byte
} while (len >= blockSize); } while (len >= blockSize);
} }
memcpy(data, input, len); if (len && data != input)
memcpy(data, input, len);
} }
template <class T, class BASE> byte * IteratedHashBase<T, BASE>::CreateUpdateSpace(size_t &size) template <class T, class BASE> byte * IteratedHashBase<T, BASE>::CreateUpdateSpace(size_t &size)