Random crash in Safari on demo page

[Daninet]

URL: https://3w4be.csb.app/

According to @gojomo:

after entering a few different short strings, maybe 30 characters total, it manages to crash the Safari page, with a "This webpage was reloaded because a problem occurred" message.

I've never seen this issue with Chrome / Firefox and I currently don't have a Macbook nearby to debug it myself.
I would be glad to see some detailed error messages / debugging info if somebody would manage to reproduce this.

[gojomo]

FWIW:

• It's easy to reproduce in Safari "Version 14.1 (15611.1.21.161.7, 15611)" on a "MacBook Pro (16-inch, 2019)" running Catalina "10.15.7 (19H1030)"
• it's not the length of the input, but just continually updating/replacing a short string that eventually triggers
• no output appears in the JS console across the page crash - if there's an easy way to capture other internal info, happy to do so

[jens-duttke]

@Daninet
I'm able to reproduce that on Safari 14.1. Here you'll find the crash report created by Safari:
com.apple.WebKit.WebContent_2021-07-28-162618_MacBook-JensDuttke.crash.txt

@gojomo
You can find these reports in ~/Library/Logs/DiagnosticReports/

[Daninet]

Thank you, @jens-duttke.

Termination Signal: Segmentation fault: 11 in the browser's main process. 😫

I created a bug report here: https://bugs.webkit.org/show_bug.cgi?id=228552

[Daninet]

It was fixed in Safari.