breakpoint-oom-01.js

Enable keyboard shortcuts

// |jit-test| skip-if: !hasFunction.oomTest

// Test for OOM hitting a breakpoint in a generator.

//

// (The purpose is to test OOM-handling in the code that creates the

// Debugger.Frame object and associates it with the generator object.)

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

g.eval(`\

    function* gen(x) {  // line 1

        x++;            // 2

        yield x;        // 3

    }                   // 4

`);

let dbg = new Debugger;

// On OOM in the debugger, propagate it to the debuggee.

dbg.uncaughtExceptionHook = exc => exc === "out of memory" ? {throw: exc} : null;

let gw = dbg.addDebuggee(g);

let script = gw.makeDebuggeeValue(g.gen).script;

let hits = 0;

let handler = {

    hit(frame) {

        hits++;

        print("x=", frame.environment.getVariable("x"));

};

for (let offset of script.getLineOffsets(2))

    script.setBreakpoint(offset, handler);

let result;

oomTest(() => {

    hits = 0;

    result = g.gen(1).next();

}, false);

assertEq(hits, 1);

assertEq(result.done, false);

assertEq(result.value, 2);