LayoutTests/fast/webgpu/regression/repro_290327.html

<script>
  globalThis.testRunner?.waitUntilDone();
  const log = console.debug;

  onload = async () => {
    let adapter = await navigator.gpu.requestAdapter({});
    let device = await adapter.requestDevice({});
    device.pushErrorScope('validation');
    let code = `
@group(0) @binding(0) var<storage, read_write> buf: atomic<u32>;

@compute @workgroup_size(1)
fn main() {
  let u = 0u;
  atomicCompareExchangeWeak(&buf, 0, vec4u(u + u).x);
}
`;
    let module = device.createShaderModule({code});
    device.createComputePipeline({
      layout: 'auto',
      compute: {module},
    });
    await device.queue.onSubmittedWorkDone();
    let error = await device.popErrorScope();
    if (error) {
      log(error.message);
    } else {
      log('Pass: no validation error');
    }
    globalThis.testRunner?.dumpAsText();
    globalThis.testRunner?.notifyDone();
  };
</script>