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enableGeckoProfiling();
try {
// Only the ARM simulator supports single step profiling.
enableSingleStepProfiling();
} catch (e) {
quit(0);
}
var g = newGlobal({newCompartment: true});
var dbg = Debugger(g);
dbg.onDebuggerStatement = function (frame) {};
g.eval("var line = new Error().lineNumber; debugger;");