mssql: weird errors when inserting data about odbc HOT 4 CLOSED

OK, I found the problem! In param.go, BindValue assigns values to Data to keep 
it from being GCed, but it doesn't assign values it actually should. For 
example in int64 case it assigns p.Data = d (a copy of int64) when buf is 
pointing to the address of int64. Because of this nothing stops GC from garbage 
collecting the heap int64, so by the time SQLExecute is called all sorts of 
garbage may happen to be there.

I am surprised it worked before! Thank you. Do you want to send the fix?

Alex

https://codereview.appspot.com/9010043/

This issue was closed by revision 62682477fd4e.