[Webkit-unassigned] [Bug 278804] New: [WebDriver][GLIB] Segfault with connection being closed by empty SetTargetList not related to disconnection

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=278804

            Bug ID: 278804
           Summary: [WebDriver][GLIB] Segfault with connection being
                    closed by empty SetTargetList not related to
                    disconnection
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebDriver
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lmoura at igalia.com
                CC: bburg at apple.com

When initializing a session, might an empty target list in `SessionHostGlib.cpp::setTargetList()`. After 282489 at main / bug277341, this function assumes whenever we get an empty target list, it means we lost connection to the RemoteInspectorServer. But we might get empty lists due to the message handler filtering only the "Automation" targets before sending to `setTargetList()`, removing targets like `WebPage`.

This behavior is leading to segfaults inside `setTargetList` due to the scenario above prematurely calling `connectionDidClose()`.

Patch incoming.

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