Protect against null repeated fields.

There's no distinction between a repeated field being null and being
empty. In both cases, nothing is sent on the wire. Clients might for
whatever reason inadvertently set a repeated field to null, so
protect against that and treat it just as if the field was empty.

Change-Id: Ic3846f7f2189d6cfff6f8ef3ca217daecc3c8be7

1 files changed, 1 insertions, 1 deletions

diff --git a/java/src/main/java/com/google/protobuf/nano/MessageNanoPrinter.java b/java/src/main/java/com/google/protobuf/nano/MessageNanoPrinter.java
index d873462..3a5ee7c 100644
--- a/java/src/main/java/com/google/protobuf/nano/MessageNanoPrinter.java
+++ b/java/src/main/java/com/google/protobuf/nano/MessageNanoPrinter.java
@@ -105,7 +105,7 @@ public final class MessageNanoPrinter {
                     if (arrayType == byte.class) {
                         print(fieldName, fieldType, value, indentBuf, buf);
                     } else {
-                        int len = Array.getLength(value);
+                        int len = value == null ? 0 : Array.getLength(value);
                         for (int i = 0; i < len; i++) {
                             Object elem = Array.get(value, i);
                             print(fieldName, arrayType, elem, indentBuf, buf);