Hi, Thanks for taking the time for the replies! Does the fact that -O1 does not work either suggest any particular clue of what to look for? -O0 does work (but that is probably expected?). This is for 4.3.5. Thanks! kevin On Wed, Feb 2, 2011 at 4:36 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > > Unfortunately not in any useful way. There are large numbers of changes > in each gcc release, far too many to be able to usefully point at a > specific change. > > Ian >