[Webkit-unassigned] [Bug 164917] New: [GTK] Crash in WebCore::PlatformDisplayX11::supportsXComposite when running under Wayland

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=164917

            Bug ID: 164917
           Summary: [GTK] Crash in
                    WebCore::PlatformDisplayX11::supportsXComposite when
                    running under Wayland
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at igalia.com
                CC: bugs-noreply at webkitgtk.org

Crash in WebCore::PlatformDisplayX11::supportsXComposite when running under Wayland. This is an epiphany-search-provider crash. I wonder how we created a PlatformDisplayX11 at all:

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 XQueryExtension at QuExt.c:43
 #1 XInitExtension at InitExt.c:47
 #2 XCompositeExtAddDisplay at Xcomposite.c:111
 #3 XCompositeFindDisplay at Xcomposite.c:208
 #4 XCompositeQueryExtension at Xcomposite.c:219
 #5 WebCore::PlatformDisplayX11::supportsXComposite at /usr/src/debug/webkitgtk-2.14.1/Source/WebCore/platform/graphics/x11/PlatformDisplayX11.cpp:80
 #6 WebKit::WebPreferences::platformInitializeStore at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/UIProcess/gtk/WebPreferencesGtk.cpp:63
 #7 WebKit::WebPreferences::create at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/UIProcess/WebPreferences.cpp:43
 #8 WebKit::WebPreferences::createWithLegacyDefaults at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/UIProcess/WebPreferences.cpp:48
 #9 WebKit::WebPageGroup::WebPageGroup at /usr/src/debug/webkitgtk-2.14.1/Source/WebKit2/UIProcess/WebPageGroup.cpp:93

Full backtrace downstream.

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