clear-old-analyses-02.js

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// |jit-test| error:AllDone

// When we leave debug mode in a compartment, we must throw away all

// analyses in that compartment (debug mode affects the results of

// analysis, so they become out of date). We cannot skip this step when

// there are debuggee frames on the stack.

var g = newGlobal({newCompartment: true});

var dbg = new Debugger();

var gw = dbg.addDebuggee(g);

g.eval("" +

       function fib(n) {

         var a = 0, b = 1;

         while (n-- > 0)

           b = b+a, a = b-a;

         return b;

});

// Cause g.fib to be jitted. This creates an analysis with debug mode on.

g.fib(20);

// Setting a breakpoint in g.f causes us to throw away the jit code, but

// not the analysis.

gw.makeDebuggeeValue(g.fib).script.setBreakpoint(0, { hit: function (f) { } });

// Take g out of debug mode, with debuggee code on the stack. In older

// code, this would not trigger a cleansing GC, so the script will

// retain its analysis.

dbg.onDebuggerStatement = function (f) {

  dbg.removeDebuggee(g);

};

g.eval('debugger');

// Run g.fib again, causing it to be re-jitted. If the original analysis is

// still present, JM will assert, because it is not in debug mode.

g.fib(20);

throw('AllDone');