https://wpt.live/html/rendering/replaced-elements/svg-inline-sizing/svg-inline.html test is hanging with Debug builds

[sideshowbarker]

Summary

When you run https://wpt.live/html/rendering/replaced-elements/svg-inline-sizing/svg-inline.html in a Debug build, it hangs/times-out.

Operating system

macOS

Steps to reproduce

0. Do a Debug build

1. (command line) Run this:

   ./Meta/ladybird.sh run headless-browser --run-tests "./Tests/LibWeb" -f svg-inline.html
   

2. (browser) Open Ladybird and navigate to https://wpt.live/html/rendering/replaced-elements/svg-inline-sizing/svg-inline.html

Expected behavior

1. (command line) The test should run to completion.
2. (browser) The test should run 648 subtests.

Actual behavior

1. (command line) You’ll see this:

   Running 1 tests...
   1/1: Text/input/wpt-import/html/rendering/replaced-elements/svg-inline-sizing/svg-inline.html
   

   …and it just hangs there until the harness times out, and then shows these results:

   Done!
   ==========================================================
   Pass: 0, Fail: 0, Skipped: 0, Timeout: 1, Crashed: 0
   ==========================================================
   Timeout: Text/input/wpt-import/html/rendering/replaced-elements/svg-inline-sizing/svg-inline.html
   

2. (browser) You’ll see this:

   Harness status: Timeout
   Found 14 tests
   12 Pass
   1 Fail
   1 Not Run
   

See also

https://github.com/LadybirdBrowser/ladybird/pull/1161#issuecomment-2306855973

URL for a reduced test case

https://wpt.live/html/rendering/replaced-elements/svg-inline-sizing/svg-inline.html

HTML/SVG/etc. source for a reduced test case

N/A

Log output and (if possible) backtrace

N/A

Screenshots or screen recordings

No response

Build flags or config settings

No response

Contribute a patch?

• [ ] I’ll contribute a patch for this myself.