[clang-proto-to-cxx] Accept protobufs with missing fields.

libprotobuf-mutator accepts protobufs with missing fields, which means
clang-proto-fuzzer does as well.  clang-proto-to-cxx should match this
behavior.

llvm-svn: 324132

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/tools/clang-fuzzer/proto-to-cxx/proto_to_cxx.cpp b/clang/tools/clang-fuzzer/proto-to-cxx/proto_to_cxx.cpp
index cd75e0c99c4..4a86515f559 100644
--- a/clang/tools/clang-fuzzer/proto-to-cxx/proto_to_cxx.cpp
+++ b/clang/tools/clang-fuzzer/proto-to-cxx/proto_to_cxx.cpp
@@ -94,7 +94,7 @@ std::string FunctionToString(const Function &input) {
 }
 std::string ProtoToCxx(const uint8_t *data, size_t size) {
   Function message;
-  if (!message.ParseFromArray(data, size))
+  if (!message.ParsePartialFromArray(data, size))
     return "#error invalid proto\n";
   return FunctionToString(message);
 }