From 8439f0ce297f6bdc6920337ec6362b657edbdd3e Mon Sep 17 00:00:00 2001
From: sigmundch <sigmund@google.com>
Date: Wed, 13 Feb 2019 21:10:41 -0800
Subject: [PATCH] Allow null dart2js version (#65)

---
 lib/binary_codec.dart | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/binary_codec.dart b/lib/binary_codec.dart
index 949cb29a08cb..672d28062047 100644
--- a/lib/binary_codec.dart
+++ b/lib/binary_codec.dart
@@ -72,7 +72,7 @@ class BinaryPrinter implements InfoVisitor<void> {
   void visitProgram(ProgramInfo info) {
     visitFunction(info.entrypoint);
     sink.writeInt(info.size);
-    sink.writeString(info.dart2jsVersion);
+    sink.writeStringOrNull(info.dart2jsVersion);
     writeDate(info.compilationMoment);
     writeDuration(info.compilationDuration);
     // Note: we don't record the 'toJsonDuration' field. Consider deleting it?
@@ -302,7 +302,7 @@ class BinaryReader {
     var info = new ProgramInfo();
     info.entrypoint = readFunction();
     info.size = source.readInt();
-    info.dart2jsVersion = source.readString();
+    info.dart2jsVersion = source.readStringOrNull();
     info.compilationMoment = readDate();
     info.compilationDuration = readDuration();
     info.toJsonDuration = new Duration(microseconds: 0);