Fixed ModuleInfo generation to no longer use the ModuleInfo class' default initializer for types/defaults, it's unsafe as initializers don't necesarily match the "formal" type. There might be explicit padding. Changed -g switch to emit DW_LANG_D debug info, make demangling work with a patched GDB, still more work to do for full support of D's Dwarf extensions. Added getNullValue helper method.

module tangotests.aa1_1;

extern(C) int printf(char*,...);

void main()
{
    int[int] map;
    map[1] = 1;
    map[10] = 1;
    map[11] = 11;
    map[14] = 41;
    map[21] = 12;
    map[23] = 32;
    map[32] = 23;
    map[201] = 102;
    foreach(k,v; map)
    {
        printf("%d:%d ", k,v);
    }
    printf("\n");
}