[Webkit-unassigned] [Bug 194523] New: REGRESSION: ( r240978-r240985 ) [ iOS Release ] Layout Test imported/w3c/web-platform-tests/xhr/send-redirect-post-upload.htm is crashing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=194523

            Bug ID: 194523
           Summary: REGRESSION: ( r240978-r240985 ) [ iOS Release ] Layout
                    Test
                    imported/w3c/web-platform-tests/xhr/send-redirect-post
                    -upload.htm is crashing
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tsavell at apple.com
                CC: lforschler at apple.com

The following layout test is failing on iOS Release

imported/w3c/web-platform-tests/xhr/send-redirect-post-upload.htm

Probable cause:

Test began crashing constantly on iOS release. I was able to reproduce locally but there is a gap in usable builds between r240978-r240985. the test passes on 240978 and crashes on r240985. There is no stderr for the crash. The test is already a constant failure. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fxhr%2Fsend-redirect-post-upload.htm

Crash:
https://build.webkit.org/results/Apple%20iOS%2012%20Simulator%20Release%20WK2%20(Tests)/r241280%20(2553)/imported/w3c/web-platform-tests/xhr/send-redirect-post-upload-crash-log.txt

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