breakpoint-multi-03.js

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// Multiple Debugger objects can set breakpoints at the same instruction.

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

function attach(g, i) {

    var dbg = Debugger(g);

    dbg.onDebuggerStatement = function (frame) {

        var s = frame.eval("f").return.script;

        var offs = s.getLineOffsets(g.line0 + 3);

        for (var j = 0; j < offs.length; j++)

            s.setBreakpoint(offs[j], {hit: function () { g.log += "" + i; }});

};

g.eval("var line0 = Error().lineNumber;\n" +

       "function f() {\n" +     // line0 + 1

       "    log += 'a';\n" +    // line0 + 2

       "    log += 'b';\n" +    // line0 + 3

       "}\n");

for (var i = 0; i < 3; i++)

    attach(g, i);

g.log = '';

g.eval('debugger;');

g.log += 'x';

g.f();

assertEq(g.log, 'xa012b');