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Following https://github.com/mdittmer/web-apis#manual-data-collection-setup I get Safari 13.1 to crash when visiting https://wpt.foolip.org/ and clicking "Collect data":

(wpt.foolip.org is a domain I use for running ./wpt serve for web-platform-tests sometimes, but it uses the same port 8000, so I also use it for running this tool.)

It doesn't crash on STP 106, however.

Is this a literal crash? If so, could you please share a crash report (perhaps at bugs.webkit.org)?

I think it's a renderer crash given the message. For Safari stable, how can I get a crash report for sharing?

@foolip this may not happen if its a renderer crash, but does anything show up in ~/Library/Logs/CrashReporter? (https://webkit.org/getting-a-crash-log/)

Edit; I think Safari calls their renderer process a 'WebProcess', incidentally.

I just got a macOS update so I tried again, but it still crashes every time. ~/Library/Logs/CrashReporter doesn't exist, but I did find a ~/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2020-05-28-093039_foolip-macbookpro.crash, one similar file per crash.

Now I'm curious, so I'll try making this a standalone test case and minify a bit.

I have filed https://bugs.webkit.org/show_bug.cgi?id=212458. I suspect it's been fixed, so I didn't minimize all the way down, probably the logs can reveal what this is a dupe of.

Note that it is fixed in r262693, thanks so much for reporting! https://trac.webkit.org/changeset/262693/webkit

Thanks @Constellation ! Is there a way for us to tell when that makes it to a Safari release (I know Apple does not comment on upcoming releases, just looking for a way we can tell when it has hit a release)?