debug-terminated.js

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// |jit-test| skip-if: !wasmJSPromiseIntegrationEnabled()

// A wasm frame suspended on a JSPI continuation is resumable, so it must report

// terminated === false (not terminated). Regression test for bug 2045497.

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

var dbg = new Debugger(g);

var frames = [];

dbg.onEnterFrame = f => {

  if (f.type === "wasmcall") {

    frames.push(f);

};

g.eval(`

  var bin = wasmTextToBinary(\`(module

    (import "" "s" (func $s))

    (func (export "f") (call $s)))\`);

  var resolver;

  var susp = new WebAssembly.Suspending(() => new Promise(r => { resolver = r; }));

  var inst = new WebAssembly.Instance(new WebAssembly.Module(bin), {"": {s: susp}});

  WebAssembly.promising(inst.exports.f)();

`);

var f = frames[0];

// Suspended continuation: not on stack, but resumable and therefore not

// terminated.

assertEq(f.onStack, false);

assertEq(f.terminated, false);

var ranAgain = false;

f.onStep = () => { ranAgain = true; };

g.eval("resolver();");

drainJobQueue();

// The frame resumed and ran again, confirming it was not terminated.

assertEq(ranAgain, true);

// After completing, the frame is now permanently terminated.

assertEq(f.terminated, true);

assertEq(f.onStack, false);