Re: Use enum to declare errno values

[moreau francis]

--- Nikita Danilov <nikita@xxxxxxxxxxxxx> a écrit :
> 
> No it shouldn't. Following is a perfectly legal thing to do in C:
> 
> enum side {
>         LEFT,
>         RIGHT
> };
> 
> int foo(int x)
> {
>         if (x & 0x1)
>                 return LEFT;
>         else
>                 return RIGHT;
> }
> 
> This is not C++ fortunately.
> 
> Nikita.
> 

hmm, are you sure that debuggers will tell you that foo returns LEFT/RIGHT but
not any integer value ?

I just give a try and unfortunately you seem to be wrong here:

""""
(gdb) s
foo (x=1) at enum_test.c:8
8               if (x & 0x1)
(gdb) finish
Run till exit from #0  foo (x=1) at enum_test.c:8
0x0804837c in main (argc=1, argv=0xbfe14dc4) at enum_test.c:17
17              return foo(1);
Value returned is $1 = 0
(gdb)
""""

But we needn't change all function prototypes that return an errno value in one
shot because as you said we can mix enum and int.

Thanks





	

	
		
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