What is the branch in the destructor reported by gcov?

Question

When I use gcov to measure test coverage of C++ code it reports branches in destructors.

struct Foo
{
    virtual ~Foo()
    {
    }
};

int main (int argc,         


        

Answer 1

In the destructor, GCC generated a conditial jump for a condition which can never be true (%al is not zero, since it was just assigned a 1):

[...]
  29:   b8 01 00 00 00          mov    $0x1,%eax
  2e:   84 c0                   test   %al,%al
  30:   74 30                   je     62 <_ZN3FooD0Ev+0x62>
[...]