When compiling "virtual public" occur an runtime error.

Question

the test code:
#include <iostream>
class A
public:
          A(){};
          virtual ~A(){};
public:
          virtual int AddRef()
                    return 0;
protected:
          int          _nID;                              //-- 1
class B : virtual public A                    //-- 2
public:
          B(){};
          virtual ~B(){};
class C : virtual public B
public:
          C(){};
          virtual ~C(){};
          virtual int          AddRef(){
                    return 1;
int main()
          std::cout << " now main function runing" << std::endl;
          A *p = new C;
          p->AddRef();                              //-- 3
          std::cout << "main function run end" << std::endl;
          return 0;
when use compiled options:
          "$(FLASCC)/usr/bin/g++" $(BASE_CFLAGS) -g -O0 c.cpp \
          -emit-swf -swf-size=800x600 -lAS3++ -lFlash++ -pthread -swf-version=18 -o c_1.swf
this program will stopped at p->AddRef(); (note 3)
but use compiled flag:
          "$(FLASCC)/usr/bin/g++" $(BASE_CFLAGS) -O4 c.cpp \
          -flto-api=exports.txt -emit-swf -swf-size=800x600 -lAS3++ -lFlash++ -pthread -swf-version=18 -o c.swf
this program work fine.
when I delete code: int _nID; (note 1) in class A or change code: class B : virtual public A to class B : public A. (note 2)
this porgram also work fine.
is this a bug?

Answer 1

I see nothing Flash specific in your source code.  Try compiling this with a native g++ toolchain to see if the problem reproduces there as well.