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Prevent overflows, just in case.

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This commit is contained in:
Tsuda Kageyu 2016-10-28 15:25:50 +09:00
parent 935534aa53
commit 005441faaa
1 changed files with 4 additions and 4 deletions
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8
taglib/riff/rifffile.cpp
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@ -161,19 +161,19 @@ void RIFF::File::setChunkData(unsigned int i, const ByteVector &data)
std::vector<Chunk>::iterator it = d->chunks.begin();
std::advance(it, i);
const int originalSize = it->size + it->padding;
const long long originalSize = static_cast<long long>(it->size) + it->padding;
writeChunk(it->name, data, it->offset - 8, it->size + it->padding + 8);
it->size = data.size();
it->padding = data.size() % 1;
it->padding = data.size() % 2;
const int diff = it->size + it->padding - originalSize;
const long long diff = static_cast<long long>(it->size) + it->padding - originalSize;
// Now update the internal offsets
for(++it; it != d->chunks.end(); ++it)
it->offset += diff;
it->offset += static_cast<int>(diff);
// Update the global size.