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Added robustness checks to JavaScript, Python, C++ code without changing functionality in normal operation.

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Nayuki Minase
2016-04-20 21:00:23 +00:00
parent 8bdecc51a3
commit 1fb0283189
3 changed files with 5 additions and 1 deletions
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cpp/QrCode.cpp
+1 -1
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@@ -348,7 +348,7 @@ void qrcodegen::QrCode::drawCodewords(const std::vector<uint8_t> &data) {
bool upwards = ((right & 2) == 0) ^ (x < 6);
int y = upwards ? size - 1 - vert : vert; // Actual y coordinate
if (!isFunction.at(y).at(x) && i < data.size() * 8) {
modules.at(y).at(x) = ((data[i >> 3] >> (7 - (i & 7))) & 1) != 0;
modules.at(y).at(x) = ((data.at(i >> 3) >> (7 - (i & 7))) & 1) != 0;
i++;
}
}