Diffusion Ant (mir/gc) Code

ant/tests/repro_async_generator_crash_stress.cjs
445f58992868mir/gc

repro_async_generator_crash_stress.cjs
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			async function* delayedPair(tag) {
			await new Promise((resolve) => setTimeout(resolve, 0));
			yield tag + ":one";
			await new Promise((resolve) => setTimeout(resolve, 0));
			yield tag + ":two";
			}

			async function stressOverlap(iteration) {
			const it = delayedPair("overlap:" + iteration);
			const p1 = it.next();
			const p2 = it.next();
			const p3 = it.next();
			return Promise.allSettled([p1, p2, p3]);
			}

			async function stressReturn(iteration) {
			const it = delayedPair("return:" + iteration);
			const p1 = it.next();
			const p2 = it.return("done:" + iteration);
			return Promise.allSettled([p1, p2]);
			}

			async function stressThrow(iteration) {
			const it = delayedPair("throw:" + iteration);
			const p1 = it.next();
			const p2 = it.throw(new Error("boom:" + iteration));
			return Promise.allSettled([p1, p2]);
			}

			async function main() {
			for (let i = 0; i < 512; i++) {
			if ((i & 31) === 0) console.log("iter", i);
			await stressOverlap(i);
			await stressReturn(i);
			await stressThrow(i);
			}
			console.log("async generator crash stress completed");
			}

			main().catch((err) => {
			console.error(err && err.stack ? err.stack : String(err));
			throw err;
			});

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