> Can anyone hazard a guess as to what is happening here ? I am at a loss to explain > why the > same call should succeed in one place and fall over in another
NPTL wierdness? I've noticed that if I use an NPTL enabled glibc with a non-NPTL kernel, all kinds of Wrong Things happen, unexplained thread crashes, deadlocks etc that disappear when using an NPTL kernel. Apps that worked before, don't now etc etc. I doubt this is your problem as before you said you were using gcc 2.95, ie not red hat 9, but it might be worth investigating....
