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Diffstat (limited to '')
| -rw-r--r-- | widget/gtk/mozgtk/mozgtk.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/widget/gtk/mozgtk/mozgtk.c b/widget/gtk/mozgtk/mozgtk.c new file mode 100644 index 0000000000..d95746fc0b --- /dev/null +++ b/widget/gtk/mozgtk/mozgtk.c @@ -0,0 +1,30 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "mozilla/Types.h" + +#include <gdk/gdk.h> + +// Dummy call to gtk3 library to prevent the linker from removing +// the gtk3 dependency with --as-needed. +// see toolkit/library/moz.build for details. +MOZ_EXPORT void mozgtk_linker_holder() { gdk_display_get_default(); } + +#ifdef MOZ_X11 +# include <X11/Xlib.h> +// Bug 1271100 +// We need to trick system Cairo into not using the XShm extension due to +// a race condition in it that results in frequent BadAccess errors. Cairo +// relies upon XShmQueryExtension to initially detect if XShm is available. +// So we define our own stub that always indicates XShm not being present. +// mozgtk loads before libXext/libcairo and so this stub will take priority. +// Our tree usage goes through xcb and remains unaffected by this. +// +// This is also used to force libxul to depend on the mozgtk library. If we +// ever can remove this workaround for system Cairo, we'll need something +// to replace it for that purpose. +MOZ_EXPORT Bool XShmQueryExtension(Display* aDisplay) { return False; } +#endif |