Body
Why won't this shit compile ? What's wrong ? I don't get it!
#include <vector>
#include <iostream>
using namespace std;
class foo {
public:
virtual void write();
};
class fubar : public foo {
public:
void write() { cout << __PRETTY_FUNCTION__ << endl; }
};
class fubar2 : public foo {
public:
void write() { cout << __PRETTY_FUNCTION__ << endl; }
};
int main()
{
vector<foo> v;
fubar one;
v.push_back(one);
}
g++ -o foo foo.cc
/tmp/cchSMAqr.o:(.gnu.linkonce.r._ZTI5fubar[typeinfo for fubar]+0x8): undefined reference to `typeinfo for foo'
/tmp/cchSMAqr.o: In function `foo::foo()':foo.cc:(.gnu.linkonce.t._ZN3fooC2Ev[foo::foo()]+0x4): undefined reference to `vtable for foo'
/tmp/cchSMAqr.o: In function `foo::foo(foo const&)':foo.cc:(.gnu.linkonce.t._ZN3fooC1ERKS_[foo::foo(foo const&)]+0x4): undefined reference to `vtable for foo'
/tmp/cchSMAqr.o: In function `foo::~foo()':foo.cc:(.gnu.linkonce.t._ZN3fooD1Ev[foo::~foo()]+0x4): undefined reference to `vtable for foo'
collect2: ld returned 1 exit status- 109178 views
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