83 replies to this topic

[monjardin]

No, the compiler has leeway to rearrange the order in which function parameters are evaluated for optimization purposes.

[Nick]

As a matter of fact Visual C++ 2005 evaluates them from right to left. The most probable reason is that most calling conventions require arguments to be pushed on the stack right to left. And the reason for that is so the arguments are in a logical left to right order on the stack, because the stack 'grows' downward. :surrender

[monjardin]

It also allows functions like sprintf to work since the first argument is always on top of the stack.

[.oisyn]

karligula said:

Regarding the

int i=0;
function(i++,i++);

thing... isn't the comma a sequence point, meaning that the expressions are evaluated in that sequence... so it should become function(0,1) and leave i=2...?

No. While the comma operator is indeed a sequence point, the comma in the function call expression does not behave like the comma operator.