On Thu, Aug 11, 2011 at 1:46 PM, Torquil Macdonald Sørensen <torquil@xxxxxxxxx> wrote: > If I compile with "-O2", it prints 0, which is wrong. > > If I compile with "-O2 -fno-strict-aliasing", it prints the correct answer > 1.6666.. > > I've verified that the problems goes away after downgrading to g++-4.5.3. > Best regards and thanks, > Torquil Sørensen > Have you tried compiling with -Wall? It would be interesting to see if the compiler thinks there's a strict aliasing violation. Brian
