Order of operations in SET

[mzuenni]

In which order are the arguments of SET evaluated, if we have something like this: SET(a=2,b=a+a)?

1. first all right hand sides are evaluated and then the assigned, i.e., like this python code: a,b=2,a+a
2. from left to right like this python code: a=2; b=a+a

It seems like the current implementation behaves like 2. even though 1. would be more natural. Checked with this snipped:

SET(a=1)
SET(a=2,b=a+a)
ASSERT(b==2)

[eldering]

The second is the current behaviour indeed, see https://github.com/DOMjudge/checktestdata/blob/main/libchecktestdata.cc#L271-L273.

I'd be inclines to say that the order is implementation defined, so if you want to make sure that SET(a=2,b=a+a) behaves as you expect, you write it as two separate SET commands.