Fix crash in gl::Context::unMakeCurrent()

src/libANGLE/Context.cpp

@@ -377,7 +377,14 @@ Context::Context(egl::Display *display,
     ASSERT(mDisplay);
 }
 
-void Context::initialize()
+egl::Error Context::initialize()
+{
+    if (!mImplementation)
+        return egl::Error(EGL_NOT_INITIALIZED, "native context creation failed");
+    return egl::NoError();
+}
+
+void Context::initializeDefaultResources()
 {
     mImplementation->setMemoryProgramCache(mMemoryProgramCache);
 
@@ -691,7 +698,7 @@ egl::Error Context::makeCurrent(egl::Display *display,
     {
         ASSERT(!mIsCurrent);
 
-        initialize();
+        initializeDefaultResources();
         initRendererString();
         initVersionStrings();
         initExtensionStrings();

src/libANGLE/Context.h

@@ -353,6 +353,8 @@ class Context final : public egl::LabeledObject, angle::NonCopyable, public angl
     // Use for debugging.
     ContextID id() const { return mState.getContextID(); }
 
+    egl::Error initialize();
+
     egl::Error onDestroy(const egl::Display *display);
     ~Context() override;
 
@@ -620,7 +622,7 @@ class Context final : public egl::LabeledObject, angle::NonCopyable, public angl
     void dirtyAllState();
 
   private:
-    void initialize();
+    void initializeDefaultResources();
 
     angle::Result prepareForDraw(PrimitiveMode mode);
     angle::Result prepareForClear(GLbitfield mask);

src/libANGLE/Display.cpp

@@ -1237,6 +1237,13 @@ Error Display::createContext(const Config *configuration,
     gl::Context *context = new gl::Context(this, configuration, shareContext, shareTextures,
                                            shareSemaphores, cachePointer, clientType, attribs,
                                            mDisplayExtensions, GetClientExtensions());
+    Error error          = context->initialize();
+    if (error.isError())
+    {
+        delete context;
+        return error;
+    }
+
     if (shareContext != nullptr)
     {
         shareContext->setShared();