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Prevent segfault in getCpuFrequency
When parseCpuFrequencies returns an empty vector, getCpuFrequency would attempt to dereference an invalid iterator. Return early from getCpuFrequency when parseCpuFrequencies returns an empty vector. Resolves a segfault when waybar is run within a VM on apple silicon.
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@ -94,6 +94,10 @@ std::tuple<std::vector<uint16_t>, std::string> waybar::modules::Cpu::getCpuUsage
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std::tuple<float, float, float> waybar::modules::Cpu::getCpuFrequency() {
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std::tuple<float, float, float> waybar::modules::Cpu::getCpuFrequency() {
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std::vector<float> frequencies = parseCpuFrequencies();
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std::vector<float> frequencies = parseCpuFrequencies();
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if (frequencies.empty())
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{
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return {0.f, 0.f, 0.f};
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}
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auto [min, max] = std::minmax_element(std::begin(frequencies), std::end(frequencies));
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auto [min, max] = std::minmax_element(std::begin(frequencies), std::end(frequencies));
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float avg_frequency =
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float avg_frequency =
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std::accumulate(std::begin(frequencies), std::end(frequencies), 0.0) / frequencies.size();
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std::accumulate(std::begin(frequencies), std::end(frequencies), 0.0) / frequencies.size();
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