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LibWeb: Don't crash when accessing property in detached Window object

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After removing an iframe from the DOM, its contentWindow will be
detached from its browsing context, per spec.

Because the contentWindow is still accessible, we cannot assume that
Window objects always have an associated browsing context.

This needs to be fixed in the spec, but let's add a sensible null check
in the meantime.
This commit is contained in:
Andreas Kling 2024-03-11 09:35:35 +01:00
parent 2e0297d703
commit ad843b6e4a
5 changed files with 28 additions and 6 deletions
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3
Tests/LibWeb/Text/expected/HTML/WindowProxy-Get-after-detaching-from-browsing-context.txt Normal file
View file

@ -0,0 +1,3 @@
null
PASS (didn't crash)