Virtual destructor causes LNK2001 !

balkanese

Hi everybody!

I encountered the following problem:

I created a "class library (.NET)" project and made a first build,
which produced a warning:

nochkclr.obj : warning LNK4099: PDB 'libc.pdb' was not found with 'C:\Programme\Microsoft Visual Studio .NET 2003\Vc7\lib\nochkclr.obj'
or ...

Ok, I ignored this warning and used the Wizard to generate a "Generic
C++ class" with a virtual destructor. When I now try to rebuild my
project I get two linker errors: wiz.obj : error LNK2001: unresolved external symbol "void __cdecl operator delete(void *)" (??3@$$FYAXPAX@Z)
and wiz.obj : error LNK2001: unresolved external symbol "void __stdcall

`eh vector destructor iterator'(void *,unsigned int,int,void
(__thiscall*)(void *))" (??_M@$$FYGXPAXIHP6EX0@Z@Z)

When I remove the "virtual" keyword in front of the destructor
declaration both linker errors disappear!!! What the @&%$ is
going on here?!?!
Thank you for your help,
Matej

----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =---

Nov 17 '05 #1

Subscribe Post Reply

2286

Steve

I don't know if it applies to your case, but are you implementing the destructor? Even with an empty {}? You'd need it.

Also, if your class is never going to be used as a parent class it's best not to declare the destructor virtual.

Nov 17 '05 #2

Similar topics

Virtual Destructor

by: Stub | last post by:

Please answer my questions below - thanks! 1. Why "Derived constructor" is called but "Derived destructor" not in Case 1 since object B is new'ed from Derived class? 2. Why "Derived destructor"...

C / C++

Compile time check for virtual destructor

by: Kai-Uwe Bux | last post by:

Hi, I decided to abandon the direct use of raw pointers in my programs and intend to replace them with templates like: dyn_array_of < typename T, typename Allocator > pointer_to < typename...

C / C++

virtual function phenomenon

by: Eric | last post by:

I found the following phenomenon in VC++ 2005: struct A {}; struct B : public A { virtual ~B() {} }; A* p = new B;

C / C++

virtual destructors for classes only with virtual functions?

by: heted7 | last post by:

Hi, Most of the books on C++ say something like this: "A virtual destructor should be defined if the class contains at least one virtual member function." My question is: why is it only for...

C / C++

Necessity of pure virtual destructor?

by: WittyGuy | last post by:

Hi, I wonder the necessity of constructor and destructor in a Abstract Class? Is it really needed? ? Wg http://www.gotw.ca/resources/clcm.htm for info about ]

C / C++

Pure Virtual Function Calls

by: pakis | last post by:

I am having a problem of pure virtual function call in my project. Can anyone explaine me the causes of pure virtual function calls other than calling a virtual function in base class? Thanks

.NET Framework

Problem with exceptions, templates and pure virtual functions

by: Dmitry Prokoptsev | last post by:

Hello, I need to write a class for exceptions which can be thrown, caught, stored and thrown once again. I have written the following code: --- begin --- #include <string> class Exception...

C / C++

questions about virtual functions and abstract classes

by: Jess | last post by:

Hello, If I have a class that has virtual but non-pure declarations, like class A{ virtual void f(); }; Then is A still an abstract class? Do I have to have "virtual void f() = 0;"...

C / C++

virtual constructors and distructors...

by: Shraddha | last post by:

What is the use of "PURE vitual distructors"? And why we can not have vitual constructors?

C / C++

Easy Steps to Fix "Canon Printer Won't Connect to WiFi Network"

by: taylorcarr | last post by:

A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...

General

How to turn on java script in a villaon keypad mobile phone

by: Charles Arthur | last post by:

How do i turn on java script on a villaon, callus and itel keypad mobile phone

Java

Basic Javascript concepts

by: aa123db | last post by:

Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...

Javascript

Batch import of multiple excel files into the database

by: ryjfgjl | last post by:

If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...

Data Management

Migrating Website to Cloud - Emmanuel Katto

by: emmanuelkatto | last post by:

Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

General

Looking to do Android software development, any suggestions? Is flutter better?

by: nemocccc | last post by:

hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?

General

How to build RAID in BIOS?

by: Hystou | last post by:

There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

Computer Hardware

What is ONU?

by: marktang | last post by:

ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...

General

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

C / C++