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.mem6;

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

int main(){
        int[] index;
        char[] value;

        foreach(int i, char c; "_\U00012345-"){
                printf("str[%d] = %d\n", i , cast(int)c);
                index ~= i;
                //value ~= c;
        }
        printf("done\n");

        return 0;
}