1 files changed, 8 insertions, 7 deletions

diff --git a/backends/protobuf/protobuf.cc b/backends/protobuf/protobuf.cc
index 9a6fedee7..fff110bb0 100644
--- a/backends/protobuf/protobuf.cc
+++ b/backends/protobuf/protobuf.cc
@@ -48,7 +48,7 @@ struct ProtobufDesignSerializer
 
 	ProtobufDesignSerializer(bool use_selection, bool aig_mode) :
 			aig_mode_(aig_mode), use_selection_(use_selection) { }
-	
+
 	string get_name(IdString name)
 	{
 		return RTLIL::unescape_id(name);
@@ -60,7 +60,7 @@ struct ProtobufDesignSerializer
 	{
 		for (auto &param : parameters) {
 			std::string key = get_name(param.first);
-			
+
 
 			yosys::pb::Parameter pb_param;
 
@@ -207,7 +207,7 @@ struct ProtobufDesignSerializer
 			(*models)[aig.name] = pb_model;
 		}
 	}
-	
+
 	void serialize_design(yosys::pb::Design *pb, Design *design)
 	{
 		GOOGLE_PROTOBUF_VERIFY_VERSION;
@@ -231,7 +231,7 @@ struct ProtobufDesignSerializer
 
 struct ProtobufBackend : public Backend {
 	ProtobufBackend(): Backend("protobuf", "write design to a Protocol Buffer file") { }
-	virtual void help()
+	void help() YS_OVERRIDE
 	{
 		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 		log("\n");
@@ -249,7 +249,7 @@ struct ProtobufBackend : public Backend {
 		log("Yosys source code distribution.\n");
 		log("\n");
 	}
-	virtual void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design)
+	void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
 	{
 		bool aig_mode = false;
 		bool text_mode = false;
@@ -286,7 +286,7 @@ struct ProtobufBackend : public Backend {
 
 struct ProtobufPass : public Pass {
 	ProtobufPass() : Pass("protobuf", "write design in Protobuf format") { }
-	virtual void help()
+	void help() YS_OVERRIDE
 	{
 		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
 		log("\n");
@@ -307,7 +307,7 @@ struct ProtobufPass : public Pass {
 		log("Yosys source code distribution.\n");
 		log("\n");
 	}
-	virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
+	void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE
 	{
 		std::string filename;
 		bool aig_mode = false;
@@ -336,6 +336,7 @@ struct ProtobufPass : public Pass {
 		std::stringstream buf;
 
 		if (!filename.empty()) {
+			rewrite_filename(filename);
 			std::ofstream *ff = new std::ofstream;
 			ff->open(filename.c_str(), std::ofstream::trunc);
 			if (ff->fail()) {