Different random shuffles generated when compiled with gdc than with dmd

[Andrew Brown via Digitalmars-d-learn]

Hi there,

The following code:

void main(){
    import std.array : array;
    import std.stdio : writeln;
    import std.random : rndGen, randomShuffle;
    import std.range : iota;

    rndGen.seed(12);
    int[] temp = iota(10).array;
    randomShuffle(temp);
    writeln(temp);
}

writes [1, 8, 4, 2, 0, 7, 5, 6, 9, 3] if it's compiled with dmd,
but [1, 7, 4, 6, 2, 9, 5, 0, 3, 8] with gdc.

I'd like to allow the users to specify an integer if they wish to
give a deterministic set of permutations. This won't matter if I
only distribute a binary created with a given compiler (aside
from scaring me into thinking I need to know more about random
number generation), but it's an annoyance when I'm trying to
check my code is doing what it should.

Is there a better way to specify an integer seed so both
compilers will agree on the permutations they generate?

Thanks very much

Andrew