Dear all,
I'm having problems with statically linked executables that use
protocol buffers.
I suspect the problem may be related to incompatibility between
std::string implementation used to compile the library vs. current. If
that's the case, the problem would likely go away with recompilation
of the protocol buffer libraries (protobuf-lite is also exposing the
same problem).
I have attached a test case as you requested. the example program
compiles two variants - one dynamically linked (works fine) and one
statically linked that crashes upon first attempt to serialize the
protocol buffer.
It would be great if someone could take a look and possibly rebuild
the static libraries for protocol buffers.
Best regards,
Tomasz
-------- example.proto ------------
syntax = "proto2";
package example;
message ExampleMsg {
optional int32 argc = 1;
optional string argv0 = 2;
};
-------- main.cc ------------
#include <iostream>
#include <string>
#include "example.pb.h"
int main(int argc, char** argv) {
example::ExampleMsg message;
message.set_argc(argc);
message.set_argv0(argv[0]);
std::cout << "Serializing protocol buffer." << std::endl;
std::string serialized;
message.SerializeToString(&serialized); // static variant crashes here.
std::cout << "Serialized length: " << serialized.length() << std::endl;
message.Clear();
std::cout << "Deserializing protocol buffer." << std::endl;
message.ParseFromString(serialized); // static variant also crashes here.
std::cout << "Deserialized content: argc=" << message.argc() << ", argv0="
<< message.argv0();
return 0;
}
-------- Makefile ------------
CFLAGS += -Wall
CXXFLAGS := $(CFLAGS)
CC = g++
LIBS = -lprotobuf.dll
all: clean example example-bug
example.pb.cc: example.proto
protoc --cpp_out=. $^
clean:
rm -f *.o *.pb.* *.exe*
example: example.pb.o main.o
$(CC) $(CFLAGS) $^ -o $@ $(LIBS)
example-bug: example.pb.o main.o
$(CC) $(CFLAGS) -static $^ -o $@ $(LIBS)
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