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Avoiding referencing elements of an empty vector

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This commit is contained in:
ENikS 2014-09-23 11:54:12 -04:00
parent 35ee2dac67
commit 459a2d25e0
1 changed files with 36 additions and 33 deletions
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3
src/hash.cpp
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@ -9,6 +9,8 @@ unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char
{ {
// The following is MurmurHash3 (x86_32), see http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp // The following is MurmurHash3 (x86_32), see http://code.google.com/p/smhasher/source/browse/trunk/MurmurHash3.cpp
uint32_t h1 = nHashSeed; uint32_t h1 = nHashSeed;
if (vDataToHash.size() > 0)
{
const uint32_t c1 = 0xcc9e2d51; const uint32_t c1 = 0xcc9e2d51;
const uint32_t c2 = 0x1b873593; const uint32_t c2 = 0x1b873593;
@ -48,6 +50,7 @@ unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char
k1 *= c2; k1 *= c2;
h1 ^= k1; h1 ^= k1;
}; };
}
//---------- //----------
// finalization // finalization