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Don't slice a sliced blob (#36866)

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When slicing a blob that is already sliced we should reference it's
parent's data instead of creating a subview into the sliced blob. This
keeps the blob ancestry chain small and reduces the number of blobs that
we have to resolve.

Testing: Includes a new crashtest
Fixes: https://github.com/servo/servo/issues/36843

[try
run](https://github.com/simonwuelker/servo/actions/runs/14844873660)

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2025-05-06 09:25:11 +02:00 • committed by GitHub
parent 3b806ca424
commit 54c2818974
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7 changed files with 76 additions and 69 deletions
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7
tests/wpt/mozilla/meta/MANIFEST.json vendored
View file

@ -60,6 +60,13 @@
{}
]
],
"slice-blob-twice-crash.html": [
"94227dcc74d80dae19b39df025708ffc24ee78c5",
[
null,
{}
]
],
"test-wait-crash.html": [
"2419da6af0c278a17b9ff974d4418f9e386ef3e0",
[

5
tests/wpt/mozilla/tests/mozilla/slice-blob-twice-crash.html vendored Normal file
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@ -0,0 +1,5 @@
<!DOCTYPE html>
<script>
(new Blob()).slice().slice().size;
</script>