Re: [LCP]gcc: case label does not reduce to an integer constant

[Angus Mackay <amackay@gusnet.cx>]

well, this is not leagle C for one. it isn't even leagle C++.

you can ONLY use integer constants in case labels in C, a "const int" IS NOT an
integer constant.

C++ added the ability to use a const int in a case label, but you have to let
the compiler what it's value is (ie. no extern).

try using a "#define" instead.

cheers, Angus.

ps. "type" is not a key word in either C or C++.


It would seem that Joachim Bauernberger (bj@gmx.net) said:
> Can sombody kindly tell me why the above error happens when compiling 
> with gcc?
> 
> The code looks as follows:
> 
> typedef struct ctype_t
> {
>     short type;
>     .......
> } ctype_t;
> 
> extern const short CT_TEXT;
> .....
> int foo(ctype_t *ct)
> {
>    
>     switch (ct->type) {
>         case CT_TEXT:
>             break;
>         .........
> }
> 
> Many thanks,
> Joachim
> 
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