Re: Use enum to declare errno values

[Nikita Danilov <nikita@clusterfs.com>]

moreau francis writes:
 > 

[...]

 > int foo(void)
 > {
 >         int tmp;
 > 
 >         tmp = bar();
 >         [...]
 >         return tmp;
 > }
 > 
 > How do you know if tmp store an errno value ? You have to look into bar and  so

Of course you should. How to debug anything without knowing what called
function is doing? This is kernel programming after all. Which, by the
way, means that debugging convenience is not at all important.

 > on...By using "enum errnoval", gdb can directly tell you that a variable stores
 > an errno value.
 > 
 > Thanks

Nikita.