On 28 August 2012 16:32, Christoph Groth wrote: > Dear GCC experts, > > I've been unable to find a description of this issue in any changelog. > Actually, I wonder whether the behavior of 4.6 or that of 4.7 is the > correct one with regard to the C++ language standard. > > Is this a known issue which has been fixed in 4.7, or rather a > regression from 4.6? The change in behaviour might be due to the patch for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48883 But I think the program has undefined behaviour according to [expr.reinterpret.cast]/6, because it calls a function through a pointer to a different function type. Specifically, something<long> which has type void*(Class<long>*) is called through a pointer of type void*(*)(void*).
