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// Don't crash on {return:} from onStep in a generator, before the initial suspend.
// This test tries to force-return from each bytecode instruction in a
// generator, up to the initial suspend.
load(libdir + "asserts.js");
let g = newGlobal({newCompartment: true});
g.values = [1, 2, 3];
g.eval(`function* f(arr=values) { yield* arr; }`);
let dbg = Debugger(g);
function test(ttl) {
let hits = 0;
dbg.onEnterFrame = frame => {
assertEq(frame.callee.name, "f");
frame.onStep = () => {
if (--ttl === 0)
return {return: 123};
};
};
dbg.uncaughtExceptionHook = exc => {
return {throw: "debugger error: " + exc};
};
let val = undefined;
let caught = undefined;
try {
val = g.f();
} catch (exc) {
caught = exc;
}
if (val === undefined) {
// Tried to force-return before the initial suspend.
assertEq(caught, "debugger error: TypeError: can't force return from a generator before the initial yield");
assertEq(ttl, 0);
return "pass";
} else {
// Reached the initial suspend without forcing a return.
assertEq(typeof val, "object");
assertEq(val instanceof g.f, true);
assertEq(ttl, 1);
return "done";
}
}
for (let i = 1; test(i) === "pass"; i++) {}