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LibWeb/Fetch: Enable callbacks in the abort signal algorithm callback

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If the request has a body, the abort will interact with promises, which
requires callbacks to be enabled.

Fixes crashing on Atlassian products.
This commit is contained in:
Luke Wilde 2025-08-26 14:44:31 +01:00 • committed by Jelle Raaijmakers
commit e2c935475f
Notes: github-actions[bot] 2025-08-26 14:30:40 +00:00
3 changed files with 14 additions and 1 deletions
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2
Libraries/LibWeb/Fetch/FetchMethod.cpp
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@ -143,7 +143,7 @@ GC::Ref<WebIDL::Promise> fetch(JS::VM& vm, RequestInfo const& input, RequestInit
controller_holder->controller()->abort(relevant_realm, request_object->signal()->reason());
// AD-HOC: An execution context is required for Promise functions.
HTML::TemporaryExecutionContext execution_context { relevant_realm };
HTML::TemporaryExecutionContext execution_context { relevant_realm, HTML::TemporaryExecutionContext::CallbacksEnabled::Yes };
// 4. Abort the fetch() call with p, request, responseObject, and requestObject’s signal’s abort reason.
abort_fetch(relevant_realm, *promise_capability, request, response_object, request_object->signal()->reason());

1
Tests/LibWeb/Text/expected/Fetch/fetch-controller-abort-with-body-does-not-crash-with-timeout.txt Normal file
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@ -0,0 +1 @@
PASS! (Didn't crash)

12
Tests/LibWeb/Text/input/Fetch/fetch-controller-abort-with-body-does-not-crash-with-timeout.html Normal file
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@ -0,0 +1,12 @@
<!DOCTYPE html>
<script src="../include.js"></script>
<script>
asyncTest((done) => {
const timeoutSignal = AbortSignal.timeout(0);
fetch('data:text/plain,fetched from far', { signal: timeoutSignal, body: "message in a bottle", method: "POST" });
setTimeout(() => {
println("PASS! (Didn't crash)");
done();
}, 1);
});
</script>