Is the order of function argument evaluation stable?

[Sze]

The part about the comma operator is talking about C, I think this part is more relevant:

@mlugg

As such, whilst I do not know if it has been formally defined at any point, I do expect Zig to ultimately include the status quo behavior in its spec, where sequencing of side effects always happens in the order of the source code (which I can confirm is guaranteed in the current compiler implementation, and in fact would be quite difficult for us to change due to how the compiler pipeline is structured).