On 03/24/2011 10:33 AM, Aldy Hernandez wrote: > In the example below we usually hoist "global" into a register or > temporary to avoid reading from it at each step. This would cause a > race if another thread had modified "global" in between iterations. > > for (x=0; x< 5; x++) > sum[x] = global;
Um, what? Doesn't the c++ memory model have, like, sequence points or somesuch verbage that includes some language like an "atomic"? Your argument above, in absence of some serializing entity, does not sound right at all. r~
