your snippit compiles fine using my vs7.1 and the latest from CVS. is there some code needed to instantiate any of this needed to cause the ICE? At Monday 2004-12-20 08:30, you wrote:

Hi

Environment: MS 7.1 compile with MS implementation of STL Boost 1.32.0

Summary:

I get an internal compiler error using boost::variant as a parameter of a boost::signal compiling with MSDEV 7.1, but not with gcc3.3/3.4 or MinGW (3.5).

Does anyone knows a workaround other than not using boost::signals?

Details

Using a signal with a variant of 2 simple classes (see code snippet) leads to an internal compiler error C1001. Using pragma command to turn optimisation off as Suggested by the compiler does not change a thing

Does anyone knows a workaround?

Regards, jom

Here's the bad code snippet:

#include <boost/bind.hpp> #include <boost/signals.hpp> #include <boost/variant.hpp>

#include <vector>

class MessageException : public std::exception { public: MessageException() : std::exception( "Message error" ) {} };

class Message { public: typedef std::vector<unsigned char> Content;

Message(unsigned int p, unsigned char def = ' ') : m_vector( p, def ) {}

const Content& message() {return m_vector;} private: Content m_vector; };

typedef boost::variant<MessageException, Message> MessageVariant;

class TestWrap { public: TestWrap(){}

typedef boost::signal1<void, MessageVariant> MessageSignal; //typedef boost::signal<void (MessageVariant)> MessageSignal;

void send_signal (MessageVariant& variant) { m_message_signal( variant ); } private: MessageSignal m_message_signal; };

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