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LibWeb: Remove tasks for destroyed documents instead of running them

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Previously, destroyed-document tasks were forced to be runnable to
prevent them from leaking in the task queue. Instead, discard them
during task selection so their callbacks never run with stale state.

This used to cause issues with a couple of `spin_until()`s in the past,
but since we've removed some of them that had to do with the document
lifecycle, let's see if we can stick closer to the spec now.
This commit is contained in:
Jelle Raaijmakers
2026-03-19 20:21:11 +01:00
committed by Andreas Kling
parent 71ba774083
commit c8baa6e179
Notes: github-actions[bot] 2026-03-19 20:25:47 +00:00 
Author: https://github.com/gmta
Commit: https://github.com/LadybirdBrowser/ladybird/commit/c8baa6e179a
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/8513
6 changed files with 19 additions and 36 deletions
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5
Libraries/LibWeb/HTML/Navigable.cpp
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@@ -1391,10 +1391,6 @@ void Navigable::populate_session_history_entry_document(
// 5. Queue a global task on the navigation and traversal task source, given navigable's active window, to run these steps:
queue_global_task(Task::Source::NavigationAndTraversal, *active_window(), GC::create_function(heap(), [this, entry, received_navigation_params = move(received_navigation_params), navigation_id, user_involvement, completion_steps, csp_navigation_type, signal_to_continue_session_history_processing]() mutable {
// NOTE: This check is not in the spec but we should not continue navigation if navigable has been destroyed.
if (has_been_destroyed())
return;
// 1. If navigable's ongoing navigation no longer equals navigationId, then run completionSteps and abort these steps.
if (navigation_id.has_value() && ongoing_navigation() != navigation_id) {
if (completion_steps) {
@@ -1871,7 +1867,6 @@ void Navigable::begin_navigation(NavigateParams params)
// 3. Queue a global task on the navigation and traversal task source given navigable's active window to abort a document and its descendants given navigable's active document.
queue_global_task(Task::Source::NavigationAndTraversal, *active_window(), GC::create_function(heap(), [this] {
VERIFY(this->active_document());
this->active_document()->abort_a_document_and_its_descendants();
}));