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Don't use gnu extensions which are too new for debian and ubuntu
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@ -24,13 +24,6 @@ class errno_error : public std::runtime_error {
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std::string error_msg{msg};
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std::string error_msg{msg};
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error_msg += ": ";
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error_msg += ": ";
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#ifdef _GNU_SOURCE
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// strerrorname_np gets the error code's name; it's nice to have, but it's a GNU extension
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const auto errno_name = strerrorname_np(err);
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error_msg += errno_name;
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error_msg += " ";
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#endif
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// strerror(3) man page says 1024 should be a big enough buffer to avoid ERANGE
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// strerror(3) man page says 1024 should be a big enough buffer to avoid ERANGE
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char errno_str[1024] = {};
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char errno_str[1024] = {};
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strerror_r(err, errno_str, sizeof errno_str);
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strerror_r(err, errno_str, sizeof errno_str);
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