I may be on to something here.  Could it be that when a function's mangled
name reaches 766 characters that VS crashes when you place a breakpoint in
the function?

Length_of_mangled_name (Works)
716 (Works)
736 (Works)
761 (Works)
766 (Does not work)
771 (Does not work)
776 (Does not work)
786 (Does not work)
846 (Does not work)

Maybe I should have just posted my code.  This code freezes my version of VS
when I place a breakpoint inside the function "f".  Notice function "f" is
never called.  I generated this code by shrinking down my 500k line app to
these 40 lines.

I am not convinced that the issue is due to the length of the mangled name
because I can construct certain functions with much longer mangled name
lengths and it works fine.

While my original version (in the 500k line app) had a much shorter class
name, in the transition to the short version I had to increase the length of
the class name to have VS die.

Thanks for your help,

Chris

int main()
{
 return 0;
}

#include <list>
#include <map>
class A;
class B;

class TSEntropyScheduleEvaluatorTSEntropyScheduleEvaluator
{
   struct S {};

   enum E {};

   void f(
     B& a,
     std::map<unsigned, int>&,
     std::map<unsigned, A*>&,
     std::map<unsigned, std::list<S*> >&,
     std::map<unsigned, std::map<unsigned, A*> >&,
     std::map<unsigned, double>&,
     E g);
};

void TSEntropyScheduleEvaluatorTSEntropyScheduleEvaluator::f(
 B& a,
 std::map<unsigned, int>&,
 std::map<unsigned, A*>&,
 std::map<unsigned, std::list<S*> >&,
 std::map<unsigned, std::map<unsigned, A*> >&,
 std::map<unsigned, double>&,
 E g)
{

}