[Python-Dev] Checking if unsigned int less then zero.

[Dmitriy Tochansky]

Hello!
Playing with cpython source, I found some strange strings in 
socketmodule.c:

---
         if (flowinfo < 0 || flowinfo > 0xfffff) {
             PyErr_SetString(
                 PyExc_OverflowError,
                 "getsockaddrarg: flowinfo must be 0-1048575.");
             return 0;
         }
---

---
     if (flowinfo < 0 || flowinfo > 0xfffff) {
         PyErr_SetString(PyExc_OverflowError,
                         "getsockaddrarg: flowinfo must be 0-1048575.");
         return NULL;
     }
---

The flowinfo variable declared few strings above as unsgined int. Is 
there any practical sense in this check? Seems like gcc just removes 
this check. I think any compiler will generate code that checks as 
unsigned, for example in x86 its JAE/JGE. May be this code is for "bad" 
compilers or exotic arch?

-- 
Dmitriy