Error Undefined Reference To Vtable
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might
Error Undefined Reference To Vtable For Qt
have Meta Discuss the workings and policies of this site About undefined reference to vtable for constructor Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads
The Vtable Symbol May Be Undefined Because The Class Is Missing Its Key Function
with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million undefined reference to vtable for class c++ programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Linking error: undefined reference to `vtable for XXX` up vote 11 down vote favorite 3 There is some linking error here. I looked for that online, yet still I couldn't find the problem. How can I fix it? g++ undefined reference to vtable for destructor test.cpp -o test /tmp/ccDfCj4N.o: In function `Interval::Interval()': test.cpp:(.text._ZN8IntervalC2Ev[Interval::Interval()]+0x9): undefined reference to `vtable for Interval' /tmp/ccDfCj4N.o: In function `IntInterval::~IntInterval()': test.cpp:(.text._ZN11IntIntervalD0Ev[IntInterval::~IntInterval()]+0x1d): undefined reference to `Interval::~Interval()' /tmp/ccDfCj4N.o: In function `IntInterval::~IntInterval()': test.cpp:(.text._ZN11IntIntervalD1Ev[IntInterval::~IntInterval()]+0x1d): undefined reference to `Interval::~Interval()' /tmp/ccDfCj4N.o:(.rodata._ZTI11IntInterval[typeinfo for IntInterval]+0x10): undefined reference to `typeinfo for Interval' collect2: ld returned 1 exit status Here is the code! All classes are in a same file for a pilot program. #include
here for a quick overview of the site Help Center Detailed answers to
Undefined Reference To Vtable For C++
any questions you might have Meta Discuss the workings and undefined reference to `vtt policies of this site About Us Learn more about Stack Overflow the company Business Learn
Undefined Reference To Vtable Qobject
more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow http://stackoverflow.com/questions/7720205/linking-error-undefined-reference-to-vtable-for-xxx Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up GCC C++ Linker errors: Undefined reference to 'vtable for XXX', Undefined reference to 'ClassName::ClassName()' up vote 64 down vote favorite 27 I'm setting up a C++ http://stackoverflow.com/questions/1095298/gcc-c-linker-errors-undefined-reference-to-vtable-for-xxx-undefined-refere project, on Ubuntu x64, using Eclipse-CDT. I'm basically doing a hello world and linking to a commerical 3rd party library. I've included the header files, linked to their libraries, but I still get linker errors. Are there some possible problems here other than the obvious (e.g. I am 99% sure I'm linking to the correct library). Is there a way to confirm the static libraries I am linking to are 64bit? Is there a way to confirm that the library has the class (and methods) I am expecting it to have? Eclipse says: Building target: LinkProblem Invoking: GCC C++ Linker g++ -L/home/notroot/workspace/somelib-3/somelib/target/bin -o"LinkProblem" ./src/LinkProblem.o -lsomelib1 -lpthread -lsomelib2 -lsomelib3 ./src/LinkProblem.o: In function `main': /home/notroot/workspace/LinkProblem/Debug/../src/LinkProblem.cpp:17: undefined reference to `SomeClass::close()' ./src/LinkProblem.o: In function `SomeOtherClass': /home/notroot/workspace/somelib-3/somelib/include/sql/somefile.h:148: undefined reference to `SomeClass::SomeClass()' /home/notroot/workspace/somelib-3/somelib/include/sql/somefile.h:148: undefined reference to `vtable for SomeOtherClass' /home/notroot/workspace/somelib-3/somelib/include/sql/somefile.h:151: undefined reference to `SomeClass::~SomeClass()' ./src/LinkProblem.o: In function `~SomeOtherClass': /home/notroot/workspace/somelib-3/somelib/include/sql/somefile.h:140: undefined reference to `vtable for SomeOtherClass' /home/notroot/workspace/somelib-3/som
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about http://stackoverflow.com/questions/4272432/c-undefined-reference-to-vtable Stack Overflow the company Business Learn more about hiring developers or posting ads with http://stackoverflow.com/questions/23255256/undefined-reference-to-vtable-for-class-constructor us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up c++ undefined reference to vtable up vote 13 down vote favorite 1 I'm learning undefined reference C++. I'm trying to do an exercise where I define several implementations of a pure virtual class with a single function. I'm having trouble linking the class that uses these implementations. ==> BasicMath.h <== #ifndef BASIC_MATH_H #define BASIC_MATH_H #include
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up undefined reference to 'vtable for class' constructor [duplicate] up vote 22 down vote favorite 2 This question already has an answer here: c++ undefined reference to vtable 6 answers i am getting an undefined reference to `vtable for student' while compiling the following header file: student.h class student { private: string names; string address; string type; protected: float marks; int credits; public: student(); student(string n,string a,string t,float m); ~student(); string getNames(); string getAddress(); string getType(); float getMarks(); virtual void calculateCredits(); int getCredits(); }; student::student(){} student::student(string n, string a,string t,float m) { names = n; address = a; marks = m; } student::~student(){} i can't find what is wrong in this.. c++ class constructor share|improve this question asked Apr 23 '14 at 21:11 Tarounen 1691212 marked as duplicate by Mooing Duck, Adriano Repetti, juanchopanza, Dave S, Kerrek SB Apr 23 '14 at 21:49 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. add a comment| 1 Answer 1 active oldest votes up vote 42 down vote accepted You're declaring a virtual function and not defining it: virtual void calculateCredits(); Either define it or declare it as: virtual void calculateCredits() = 0; Or simply: virtual void calculateCredits() { }; Read more about vftable: http://en.wikipedia.org/wiki/Virtual_method_table share|improve this answer answered Apr 23 '14 at 21:13 user9000 1,7791223 thank you, it worked.. actually this is only part of the header file, i have another class below which uses the function calculateCredits() i thought there was no need to define in the student class.. –Tarounen Apr 23 '14 at 21:21 3 In most ABIs, the vtable is emitted in the compilation unit defining the first virtual function not defined in the class definition. If there is none such, it will be emitted in all. Multiple such objects will then be folded. –Deduplicator Apr 23 '14 at 21:22 1 I'm getting the s