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POCryptic compiler error, maybe to do with use of "virtual"?
 

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  1. POCryptic compiler error, maybe to do with use of "virtual"?
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    <p>I'm getting this compiler error. I have several hundred lines of code, so I'll post some that I think might be relevant but you'll need to tell me what you want to see.</p> <p>Here's the error I get at compile time:</p> <p>/tmp/ccBE5kZ5.o:game.cpp:(.text+0x1067): undefined reference to <code>vtable for Person' /tmp/ccBE5kZ5.o:game.cpp:(.text+0x17a5): undefined reference to</code>vtable for Person' /tmp/ccBE5kZ5.o:game.cpp:(.text+0x1ee6): undefined reference to <code>vtable for Person' /tmp/ccBE5kZ5.o:game.cpp:(.text+0x2560): undefined reference to</code>vtable for Person' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld: /tmp/ccBE5kZ5.o: bad reloc address 0xc in section `.text$_ZN6WeaponD1Ev[Weapon::~Weapon()]' /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld: final link failed: Invalid operation collect2: ld returned 1 exit status</p> <p>Here's the declaration of my Person class and my Weapon class, and the Actor class the Person is a descendant of:</p> <pre><code>class Actor { public: virtual void act(); virtual string getName(); virtual void setName(string n); Actor(); Actor(string n); virtual ~Actor(); private: string name; }; class Person : public Actor { public: void act(); virtual void fight(Person enemy); virtual void takeDamage(double dmg); // getters and setters virtual unsigned getX(); virtual void setX(unsigned amt); virtual unsigned getY(); virtual void setY(unsigned amt); virtual Weapon getWeapon(); virtual void setWeapon(Weapon w); virtual Weapon getArmor(); virtual void setArmor(Weapon a); virtual unsigned getLevel(); virtual void setLevel(unsigned amt); virtual double getHealth(); virtual void setHealth(double amt); virtual double getXP(); virtual void setXP(double amt); Person(); Person(string n); private: Weapon wep; Weapon armor; double xp; unsigned level; double health; unsigned x; unsigned y; }; class Weapon { public: double getStrength(); void setStrength(double s); double getValue(); void setValue(double amt); double getHealth(); void setHealth(double amt); string getName(); void setName(string n); string getType(); void setType(string t); Weapon(); Weapon(string n, string t, double dmg); private: string name; string type; double value; double health; double strength; }; </code></pre>
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    1. USChemicalRocketeer
    1. USChemicalRocketeer
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    1. CO`vtable` errors occur when you invoke an object of a class which doesn't have the definitions of the virtual methods (even though you may not be calling any methods). Where are the definitions, are they present in .cpp files ?
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      1. POCryptic compiler error, maybe to do with use of "virtual"?
      1. USiammilind
    2. COAdded [gcc] tag as it seemed relevant and accurate.
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      1. POCryptic compiler error, maybe to do with use of "virtual"?
      1. USJohn Dibling
 

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