Avoiding referencing elements of an empty vector

10 years ago · 459a2d25e0
parent 35ee2dac67
commit 459a2d25e0
1 changed files with 36 additions and 33 deletions
--- a/src/hash.cpp
+++ b/src/hash.cpp
@ -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
    uint32_t h1 = nHashSeed;
+    if (vDataToHash.size() > 0)
+    {
        const uint32_t c1 = 0xcc9e2d51;
        const uint32_t c2 = 0x1b873593;

@ -48,6 +50,7 @@ unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char
            k1 *= c2;
            h1 ^= k1;
        };
+    }

    //----------
    // finalization