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-rw-r--r--src/google/protobuf/compiler/csharp/csharp_message.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/google/protobuf/compiler/csharp/csharp_message.cc b/src/google/protobuf/compiler/csharp/csharp_message.cc
index 6ea568ca..ea722455 100644
--- a/src/google/protobuf/compiler/csharp/csharp_message.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_message.cc
@@ -428,7 +428,8 @@ void MessageGenerator::GenerateMergingMethods(io::Printer* printer) {
" if (pb::WireFormat.IsEndGroupTag(tag)) {\n"
" return;\n"
" }\n"
- " break;\n"); // Note: we're ignoring unknown fields here.
+ " input.ConsumeLastField();\n" // We're not storing the data, but we still need to consume it.
+ " break;\n");
for (int i = 0; i < fields_by_number().size(); i++) {
const FieldDescriptor* field = fields_by_number()[i];
internal::WireFormatLite::WireType wt =