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stream: improve view validation on ReadableStreamBYOBRequest.respondWithNewView() #44155

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merged 1 commit into from
Aug 15, 2022
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stream: improve view validation on ReadableStreamBYOBRequest.respondWithNewView() #44155

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9 changes: 9 additions & 0 deletions lib/internal/webstreams/readablestream.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2516,6 +2516,15 @@ function readableByteStreamControllerRespondWithNewView(controller, view) {
const viewBuffer = ArrayBufferViewGetBuffer(view);
const viewBufferByteLength = ArrayBufferGetByteLength(viewBuffer);

if (stream[kState].state === 'closed') {
if (viewByteLength !== 0)
throw new ERR_INVALID_STATE.TypeError('View is not zero-length');
} else {
assert(stream[kState].state === 'readable');
if (viewByteLength === 0)
throw new ERR_INVALID_STATE.TypeError('View is zero-length');
}

const {
byteOffset,
byteLength,
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8 changes: 0 additions & 8 deletions test/wpt/status/streams.json
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Expand Up @@ -4,13 +4,5 @@
},
"transferable/deserialize-error.window.js": {
"skip": "Browser-specific test"
},
"readable-byte-streams/bad-buffers-and-views.any.js": {
"fail": {
"note": "TODO: implement detached ArrayBuffer support",
"expected": [
"ReadableStream with byte source: respondWithNewView() throws if the supplied view's buffer is zero-length (in the readable state)"
]
}
}
}