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text_formatter: Avoid unnecessary string temporary creation in PrintMessage()
operator+ for std::string creates an entirely new string, which is kind of unnecessary here if we just want to append a null terminator to the existing one. Reduces the total amount of potential allocations that need to be done in the logging path.
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@ -31,7 +31,7 @@ std::string FormatLogMessage(const Entry& entry) {
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}
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void PrintMessage(const Entry& entry) {
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auto str = FormatLogMessage(entry) + '\n';
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const auto str = FormatLogMessage(entry).append(1, '\n');
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fputs(str.c_str(), stderr);
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}
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