I have a C++ class and code that looks like this:
#include <iostream>
using namespace std;
class Z
{
public:
Z() {}
~Z() {}
protected:
int z_;
};
int
main(int argc, char** argv)
{
Z buf[100];
cout << sizeof(buf) << endl;
return 0;
}
The compiler version is 4.01 (on Fedora 4). If I compile with -O0 then the
creation of buf results in a loop being generated which calls the Z()
constructor 100 times.
But then if I compile with -O the constructor will be inlined. The generated
machine code contains a loop which does nothing 100 times:
movl $100, %eax
.L11:
decl %eax
jne .L11
I think that the optimiser should get rid of the loop once it has got rid of
the body!
Should I submit this as a bug?
