fix: Qt6 Wayland crash — root cause identified, kded6 fix deployed

ROOT CAUSE: Qt6's auto-generated Wayland wrappers pass NULL proxies to wl_*_add_listener() during initialization. The generated code stores wlRegistryBind() return value in m_wl_* member without null check, then init_listener() calls wl_*_add_listener(m_wl_*, ...) which page-faults at null+8 (write to proxy->object.implementation). FIX (kded6): wrapper script renames libqwayland.so to .disabled before launching kded6.real. QT_QPA_PLATFORM=offscreen alone is not sufficient — Qt6 still loads wayland plugin despite env var. FIX (libwayland): null guards in redox.patch for wl_proxy_add_listener, wl_proxy_get_version, wl_proxy_get_display. Blocked from compilation by pre-existing relibc conflicts (open_memstream, signalfd_siginfo). FIX (Qt6 wrappers): regex-based null guard insertion proven in concept. Blocked by TOML recipe format not supporting backslash escape sequences. Implementation plan: inject null guards via a separate build step script rather than inline in recipe.toml.
2026-05-06 16:34:46 +01:00
parent 8c51508362
commit 36c8c3d95a
37 changed files with 1057 additions and 321 deletions
@@ -74,10 +74,10 @@ void initializeLanguages()
        // Ideally setting the LANGUAGE would change the default QLocale too
        // but unfortunately this is too late since the QCoreApplication constructor
        // already created a QLocale at this stage so we need to set the reset it
-////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////        // by triggering the creation and destruction of a QSystemLocale
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////        // by triggering the creation and destruction of a QSystemLocale
        // this is highly dependent on Qt internals, so may break, but oh well
-////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////        QSystemLocale *dummy = new QSystemLocale();
-////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////        delete dummy;
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////        QSystemLocale *dummy = new QSystemLocale();
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////        delete dummy;
    }
 }