breakpoint-gc-01.js

Enable keyboard shortcuts

// Handlers for breakpoints in an eval script are live as long as the script is on the stack.

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

var dbg = Debugger(g);

var log = '';

dbg.onDebuggerStatement = function (frame) {

    function handler(i) {

        return {hit: function () { log += '' + i; }};

    var s = frame.script;

    var offs = s.getLineOffsets(g.line0 + 2);

    for (var i = 0; i < 7; i++) {

        var h = handler(i);

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

            s.setBreakpoint(offs[j], h);

    gc();

};

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

       "debugger;\n" +  // line0 + 1

       "x = 1;\n");     // line0 + 2

assertEq(log, '0123456');