[coreboot] C Programming
minxinjianxin at gmail.com
Mon Jul 14 12:20:39 CEST 2008
On Mon, Jul 14, 2008 at 5:46 PM, Peter Stuge <peter at stuge.se> wrote:
> On Mon, Jul 14, 2008 at 06:16:06AM +0800, Star Liu wrote:
>> I hope I'm not posting to the wrong place, if so, please remind me :)
>> I'm making some practice on C programming, so that I can get into the
>> linux world.
> Well it seems you're programming a CGI application, so I think this
> list isn't the best place to ask.
>> 131 if(strcasestr(comment, "</xmp")!=NULL)
>> LeaveMessage.c:131: warning: comparison between pointer and integer
>> So i don't know why i got this warning,
> The error says that something is wrong in the comparison. You're
> comparing a function return value with NULL.
> Either the compiler believes that strcasestr() returns integer, or it
> believes that NULL is defined as integer.
> The latter is not so likely because NULL is usually defined as (void *)
> which is a pointer type, or it is not defined at all. If it was not
> defined at all, you would get a different error message.
> So, the compiler says strcasestr() returns integer. That is the
> fallback if the compiler has not seen a prototype (or declaration)
> for a function before it is called.
>> what's the correct way to deal with it?
> I think you may be missing
> #include <strings.h>
> where strcasecmp() is declared.
thank you, i think there is something wrong with the gcc or
strcasestr, but it doesn't matter, i can manually convert it by
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