add:  msg = safeToString(msg);  
context: function proxyAlert(msg) {    try {        // It would appear that the console service is threadsafe.        var cns = Components.classes["@mozilla.org/consoleservice;1"]                            .getService(Components.interfaces.nsIConsoleService);        cns.logStringMessage("PAC-alert: "+msg);    } catch (e) {        dump("PAC: proxyAlert ERROR: "+e+"\n");    }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/dbf1be57b832a0c182b6d28befbf249948439e4f/nsProxyAutoConfig.js/clean/netwerk/base/src/nsProxyAutoConfig.js