Failure to optimize away the parent pointer
Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=2672
Reported by Martin Stjernholm mast@roxen.com
In the following case, the parent pointer in X ought to be optimized away, but it isn't:
class I {}
class X
{
I i;
}
int main()
{
X x = ((program) X)(); // Error: Parent lost, cannot clone program.
}