Boost serialization throws std exception
While testing some code that uses the Boost serializer, I saw that std :: length_error was thrown when de-serializing. I am running the code below on Linux (on Windows I have not seen this issue). I am using Boost 1.47.0.
My serialization class:
class TestClass
{
public:
TestClass() {};
TestClass(const char* string1, const char* string2, const char* string3):
string1(string1),
string2(string2),
string3(string3)
{};
template<class Archive>
void serialize(Archive & archive, const unsigned int version)
{
// When the class Archive corresponds to an output archive, the
// & operator is defined similar to <<. Likewise, when the class Archive
// is a type of input archive the & operator is defined similar to >>.
archive & this->string1;
archive & this->string2;
archive & this->string3;
}
std::string string1;
std::string string2;
std::string string3;
};
My test code:
TestClass testClass;
std::string value("nonsense");
try
{
std::stringstream stringStream;
stringStream << value;
boost::archive::text_iarchive serializer(stringStream);
serializer >> testClass;
}
catch (const boost::archive::archive_exception& e)
{
....
}
When executing this code, I get std :: length_error:
call completion after calling instance 'std :: length_error'
what (): basic_string :: resize
Is this the known (documented) behavior of the Boost serializer, can I inspect the input stream to see if it's really / try / catch is missing from the deserializer?
Regards,
Johan
You write a string and read your TestClass.
Your string
archive & this->string2;
already trying to read from uninitialized memory. This means that you will try to allocate a std :: string that is too large (50% of the time, with the two strings very similar each time).
So the exception is coming from your code, and no wonder it didn't make it into the archiver.