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-rw-r--r--java/src/main/java/com/google/protobuf/nano/MessageNanoPrinter.java2
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 572a707..4cca3d5 100644
--- a/java/src/main/java/com/google/protobuf/nano/MessageNanoPrinter.java
+++ b/java/src/main/java/com/google/protobuf/nano/MessageNanoPrinter.java
@@ -243,7 +243,7 @@ public final class MessageNanoPrinter {
builder.append('"');
for (int i = 0; i < bytes.length; ++i) {
- int ch = bytes[i];
+ int ch = bytes[i] & 0xff;
if (ch == '\\' || ch == '"') {
builder.append('\\').append((char) ch);
} else if (ch >= 32 && ch < 127) {