hello,
just now, I am implementing a CircularQueue template on my code (this class template works fine on a PC-based C++ compiler). I am using Code Composer Studio Version: 5.1.1.00031 .
==========================
on file circularqueue.hpp, contains the template:
template <class datatype,class ctrtype> class CircularQueue
{
private:
........
public:
CircularQueue(ctrtype queuesize);
~CircularQueue(void);
.....
};
=======================
on file circularqueue.cpp, contains the implementation
template <class datatype,class ctrtype> CircularQueue <datatype,ctrtype> ::CircularQueue(ctrtype queuesize)
{
..... codes
}
====================
on file ut.cpp (for unittest), contains
void testcasequeue()
{
CircularQueue<int,int> q(3);
.... code and asserts blah blah
}
when I try to compile this, this gives me an error:
<Linking>
undefined first referenced
symbol in file
--------- ----------------
bool CircularQueue<T1, T2>::Dequeue(T1 *) [with T1=unsigned char, T2=unsigned char] ./SourceCodes/Ut/ut.obj
void CircularQueue<T1, T2>::Enqueue(T1) [with T1=unsigned char, T2=unsigned char] ./SourceCodes/Ut/ut.obj
bool CircularQueue<T1, T2>::HasData() [with T1=unsigned char, T2=unsigned char] ./SourceCodes/Ut/ut.obj
CircularQueue<T1, T2>::CircularQueue<unsigned char, unsigned char>(T2) [with T1=unsigned char, T2=unsigned char] ./SourceCodes/Ut/ut.obj
CircularQueue<T1, T2>::~CircularQueue<unsigned char, unsigned char>() [with T1=unsigned char, T2=unsigned char] ./SourceCodes/Ut/ut.obj
error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking;
===================================
but when I just put add dummy function on circularqueue.cpp (and it's not used elsewhere)
void dummyfunc()
{
CircularQueue<int,int> q(3); // when I comment this, the linker throws an error
}
then everything works fine. I can upload the program to the MSP430 and it runs happily. do I miss some compiler settings for this? I would like to remove the dummy function as this should not be there in the first place.
My guess it that there is some unwanted dead-code removal process that takes place during compiling?
thanks ;)
