This bug reproducible also without a template:

http://pastebin.com/QPvCFYL1

$ ./bug
works:
Inside of body: value=1 type=ulong
Inside of out contract: value=1 type=ulong result=[1]
not works:
Inside of body: value=300 type=ulong
Inside of out contract: value=2 type=ulong result=[172, 2]

On Wednesday, 18 September 2013 at 21:13:27 UTC, mrd wrote:
> This bug reproducible also without a template:
>
> http://pastebin.com/QPvCFYL1
>
> $ ./bug
> works:
> Inside of body: value=1 type=ulong
> Inside of out contract: value=1 type=ulong result=[1]
> not works:
> Inside of body: value=300 type=ulong
> Inside of out contract: value=2 type=ulong result=[172, 2]

Well, as we have already concluded, you can't mutate your input arguments if you wish to use them again in your out contract.