Why SOS Debugging Extension can NOT debug Nullable type?

Jun 28 2011 3:19 AM

static

void Main(string[] args)
{
Nullable<int> nullINT = 100;
} 1).load sos.dll 2)!clrstack -l Cannot trace out the variable info.

But for this following code,

static void Main(string[] args)
{
SimpleClass sc1 = new SimpleClass();
}

1).load sos.dll 2)!clrstack -l Can trace out the variable info right now. Looks like this,