Hello,

import  std.stdio,
              std.conv;

void main()
{
    writeln(to!(string)(int.min));
}


dmd 2.030, stock phobos, Intel Core i7.

On Debian 5 32b, -debug :
    returns "core.exception.RangeError@std.conv(2473): Range violation".
On Windows XP 32b, -debug :
    returns "core.exception.RangeError@std.conv(2472): Range violation".

On Debian 5 32b, -release :
    returns "-184¨šˆ¿4071562067968"
On Windows XP 32b, -release :
    returns "-18446744071562067968"