Fix NPE in Binder#getTransactionName (28d940e3) · Commits · e / os / android_frameworks_base

core/java/android/os/Binder.java

+12 −5

Original line number	Diff line number	Diff line
		@@ -311,6 +311,7 @@ public class Binder implements IBinder {
		private final long mObject;

		private IInterface mOwner;
		@Nullable
		private String mDescriptor;
		private volatile String[] mTransactionTraceNames = null;
		private volatile String mSimpleDescriptor = null;
		@@ -930,8 +931,8 @@ public class Binder implements IBinder {
		transactionNames[i] = buf.toString();
		buf.setLength(0);
		}
		mTransactionTraceNames = transactionNames;
		mSimpleDescriptor = descriptor;
		mTransactionTraceNames = transactionNames;
		}
		final int index = transactionCode - FIRST_CALL_TRANSACTION;
		if (index < 0 \|\| index >= mTransactionTraceNames.length) {
		@@ -940,13 +941,19 @@ public class Binder implements IBinder {
		return mTransactionTraceNames[index];
		}

		private String getSimpleDescriptor() {
		final int dot = mDescriptor.lastIndexOf(".");
		private @NonNull String getSimpleDescriptor() {
		String descriptor = mDescriptor;
		if (descriptor == null) {
		// Just "Binder" to avoid null checks in transaction name tracing.
		return "Binder";
		}

		final int dot = descriptor.lastIndexOf(".");
		if (dot > 0) {
		// Strip the package name
		return mDescriptor.substring(dot + 1);
		return descriptor.substring(dot + 1);
		}
		return mDescriptor;
		return descriptor;
		}

		/**