Fixing fb4a crashes due to null pointer exception (#55529)

Dileep Siva Sai Nallabothu · meta-codesync[bot] · commit 349cf1595bd0 · 2026-02-12T16:09:33.000-08:00
Summary: [Android][Fixed] - Fix null pointer crash in FabricUIManagerBinding::driveCxxAnimations by adding null check for scheduler Pull Request resolved: #55529 Crash failures during e2e: https://www.internalfb.com/intern/test/562949977559616 logview: https://fburl.com/logview/65na7gyr Reason: null dereference Pull Request resolved: #55529 Crash failures during e2e: https://www.internalfb.com/intern/test/562949977559616 logview: https://fburl.com/logview/65na7gyr Reason: null dereference Reviewed By: javache Differential Revision: D92986523 fbshipit-source-id: 2a193cdc93a44a59fedfb7974bb694546a2000f6
diff --git a/packages/react-native/ReactAndroid/src/main/jni/react/fabric/FabricUIManagerBinding.cpp b/packages/react-native/ReactAndroid/src/main/jni/react/fabric/FabricUIManagerBinding.cpp
@@ -52,7 +52,13 @@ void FabricUIManagerBinding::setPixelDensity(float pointScaleFactor) {
 }
 
 void FabricUIManagerBinding::driveCxxAnimations() {
-  getScheduler()->animationTick();
+  auto scheduler = getScheduler();
+  if (!scheduler) {
+    LOG(ERROR)
+        << "FabricUIManagerBinding::driveCxxAnimations: scheduler disappeared";
+    return;
+  }
+  scheduler->animationTick();
 }
 
 void FabricUIManagerBinding::driveAnimationBackend(jdouble frameTimeMs) {

Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,13 @@ void FabricUIManagerBinding::setPixelDensity(float pointScaleFactor) {`
`52`	`52`	`}`
`53`	`53`
`54`	`54`	`void FabricUIManagerBinding::driveCxxAnimations() {`
`55`		`- getScheduler()->animationTick();`
	`55`	`+ auto scheduler = getScheduler();`
	`56`	`+ if (!scheduler) {`
	`57`	`+ LOG(ERROR)`
	`58`	`+ << "FabricUIManagerBinding::driveCxxAnimations: scheduler disappeared";`
	`59`	`+ return;`
	`60`	`+ }`
	`61`	`+ scheduler->animationTick();`
`56`	`62`	`}`
`57`	`63`
`58`	`64`	`void FabricUIManagerBinding::driveAnimationBackend(jdouble frameTimeMs) {`