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// A breakpoint handler hit method can return {throw: exc} to throw an exception.
var g = newGlobal({newCompartment: true});
var dbg = Debugger(g);
dbg.onDebuggerStatement = function (frame) {
function hit(frame) {
return {throw: frame.eval("new Error('PASS')").return};
}
var s = frame.script;
var offs = s.getLineOffsets(g.line0 + 3);
for (var i = 0; i < offs.length; i++)
s.setBreakpoint(offs[i], {hit: hit});
};
g.s = null;
g.eval("line0 = Error().lineNumber;\n" +
"debugger;\n" + // line0 + 1
"try {\n" + // line0 + 2
" s = 'FAIL';\n" + // line0 + 3
"} catch (exc) {\n" +
" assertEq(exc.constructor, Error);\n" +
" s = exc.message;\n" +
"}\n");
assertEq(g.s, 'PASS');