클래스 템플릿의 부분특수화로 객체를 선언하면 실행시 오류가 발생합니다.

#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;
 
template<class targ_first, class targ_second > class SomeC {
public:
	targ_first x,y;
	targ_second* msg;
	SomeC() {
		printf("SomeC()\n");
	}
	void setXY(targ_first x, targ_first y) {
		this->x=x;
		this->y=y;
	}
	targ_first getX() {
		return x;
	}
	targ_first getY() {
		return y;
	}
	void setMsg(const targ_second* msg) {
		unsigned len=strlen(msg);
		this->msg=new targ_second[len+1];
		(this->msg)[len]=0;
		for(unsigned i=0;i<len;i++) {
			(this->msg)[i]=msg[i];
		}
	}
	targ_second* getMsg() {
		return this->msg;
	}
	~SomeC() {
		if(this->msg!=NULL) {
			delete[] (this->msg);
		}
	}
};
template<> class SomeC<char,char> {//전체 특수화
public:
	char x,y;
	char* mm;
	SomeC() {
		printf("In SomeC<char,char>\n");
	}
	void setXY(char x, char y) {
		this->x=x;
		this->y=y;
	}
	void setMM(const char* mm) {
		unsigned len=strlen(mm);
		this->mm=new char[len+1];
		(this->mm)[len]=0;
		for(unsigned i=0;i<len;i++) {
			(this->mm)[i]=mm[i];
		}
	}
	~SomeC() {
		delete[] (this->mm);
	}
};
 
template<class targ> class SomeC<char, targ> {//부분 특수화
public:
	char x,y;
	targ* nonchararr;
	unsigned length;
	SomeC() {
		printf("In SomeC<char,targ>\n");
	}
	void setXY(char x, char y) {
		this->x=x;
		this->y=y;
	}
	void setNonchararr(targ* nonchararr,unsigned len) {
		this->nonchararr=new char[len];;
		for(unsigned i=0;i<len;i++) {
			(this->nonchararr)[i]=nonchararr[i];
		}
		length=len;
	}
	void output() {
		for(unsigned i=0;i<length;i++) {
			cout<<nonchararr[i]<<endl;
		}
	}
	~SomeC() {
		delete[] (this->nonchararr);
	}
};
 
 
int main() {
	SomeC<int,char> ab;
	ab.setXY(10,20);
	ab.setMsg("Note");
	printf("(%d,%d), %s\n",ab.getX(),ab.getY(),ab.getMsg());
 
	SomeC<char,char> ac;
	ac.setXY('h','j');
	ac.setMM("setMM");
	printf("(%c,%c),    %s\n",ac.x,ac.y,ac.mm);
	//printf("(%c,%c)\n",ac.getX(),ac.getY());
 
	SomeC<char,int> ad;
	/*ad.setXY('l','m');*/
 
	return 0;
}