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LibWeb: Don't crash in XHR.response{,XML} for empty XML document

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There were some unhandled paths due to the liberally typed XHR response
object. This patch flushes out those issues by using a tighter type set
in the Variant. (NonnullGCPtr<Object> instead of Value)
This commit is contained in:
Andreas Kling
2023-10-07 07:57:16 +02:00
parent c21efdfc8a
commit 2b343c9508
Notes: sideshowbarker 2024-07-17 07:43:05 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/2b343c9508
Pull-request: https://github.com/SerenityOS/serenity/pull/21362
6 changed files with 48 additions and 11 deletions
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16
Tests/LibWeb/Text/input/XMLHttpRequest-responseXML-empty.html Normal file
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@@ -0,0 +1,16 @@
<script src="include.js"></script>
<script>
asyncTest((done) => {
const xhr = new XMLHttpRequest();
xhr.responseType = "document";
xhr.open("GET", "data:text/xml,", true);
xhr.onreadystatechange = function() {
if (xhr.readyState === 4 && xhr.status === 200) {
let xml = xhr.responseXML;
println("PASS"); // Didn't crash :^)
done();
}
};
xhr.send();
});
</script>