I Have generated a lot of interest with my rather confusing statement:

I will have to admit a fair amount of confusion on my part: I had calling
conventions of specific compilers confused with language definitions. It was my
belief that the C language definition specified that arguments should be passed
right-to-left, (As is required when there are a variable number of arguments.)
and that the C++ defintion specified that they should be passed left-to-right
except when there is a variable number of arguments. (Does anyone know exactly
why left-to-right is so much more efficient? - I can no-longer find my
reference.) On the C++ side, this ended up being a compiler-specific issue which
I misread. I assume it is the same for C, but I cannot prove that.

I will no-longer post any information relating to this topic as it has little to
do with Dylan- feel free to contact me independently as I am interested in this
topic.

Thanks to those who replied and pointed it out!

Bill