bug911065.js - mozsearch

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

var dbg = new Debugger;

var gw = dbg.addDebuggee(g);

g.eval(`                        //  1

var line0 = Error().lineNumber; //  2

function f() {                  //  3

    for (var x of [0]) {        //  4

        if (true == false)      //  5

            return false;       //  6, aka line0 + 4

    }                           //  7

    return true;                //  8

}                               //  9

`);                             // 10

if (g.dis)

  g.dis(g.f);

var script = gw.getOwnPropertyDescriptor("f").value.script;

print("Debugger's view:");

print("----------------");

for (var i = script.startLine; i <= script.startLine + script.lineCount; i++) {

  print("Line " + i + ": " + JSON.stringify(script.getLineOffsets(i)));

var hits = 0;

var handler = {hit: function () { hits++; }};

var offs = script.getLineOffsets(g.line0 + 4);

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

    script.setBreakpoint(offs[i], handler);

assertEq(g.f(), true);

assertEq(hits, 0);