[Webkit-unassigned] [Bug 152928] New: run-webkit-tests wedges forever when stderr has a very long line of output

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=152928

            Bug ID: 152928
           Summary: run-webkit-tests wedges forever when stderr has a very
                    long line of output
    Classification: Unclassified
           Product: WebKit
           Version: Safari 9
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: beidson at apple.com
                CC: lforschler at apple.com

run-webkit-tests wedges forever when stderr has a very long line of output

Steps to reproduce:
1 - Build ToT WebKit
2 - Turn on IndexedDB logging in WebCore: `defaults write -g WebCoreLogging IndexedDB`
3 - `run-webkit-tests -1 imported/w3c/indexeddb/keyorder.htm`

run-webkit-tests will hang "forever", not even timing out the test.

python is using 100% CPU doing lots of symbol-less busywork.

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