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Hi,
I'm getting this error when I tried to compile the program in Linux platform.
'error: array type has incomplete element type'
It works fine in AIX and was able to successfully compile, but not in Linux.
Here's a part of the code:
#ifdef MAIN_PROG
struct COMPETITOR competitor[MAX_SIZE];
struct COMPETITOR competitor_sav[MAX_SIZE];
.
.
.
#else
.
.
extern struct COMPETITOR competitor[];
extern struct COMPETITOR competitor_sav[];
#endif
Any input on this? Thanks.
Is struct COMPETITOR defined when MAIN_PROG is not? The error message is telling you that gcc doesn't know anything about a struct COMPETITOR, so it can't figure out how it would create (or index) an array of them. I can't tell you why an AIX compiler wouldn't have the same problem; but the source of the gcc error is lack of a struct definition.
Thanks cas for your response.
What do you mean by the source of the gcc error is lack of a struct defition? If it lack of a struct definition, how it can be defined then based on the provided code? Please advise. Thanks again.
Looks like you're trying to create an array of structs in Linux, without specifying the size of the array. Add a #define for MAX_SIZE, or provide some other suitable size for it.
Empty squared brackets just won't work.
Thanks Adak for your response.
Yes the MAX_SIZE has been defined in the code.
#define MAX_SIZE 1000.
The program has been successfully compiled in AIX, and it's working fine. However, when I tried to compile in Linux, I'm getting this error. So I'm not sure if there's a compatibility issue or whatever. Please advise. Thanks.
How can what be defined based on the previous code? You mean when MAIN_PROG is defined? That was my entire question: does your struct get defined inside of an #ifdef MAIN_PROG block? If yes, there's your problem. If no, then it's hard to say, but you have to figure out if your struct is being defined during the build when you get the error.Quote:
Originally Posted by gerger
Find out where your struct definition is. Put an #error directive above it (gcc should support that). If your build does not bomb out on the line containing #error, your struct is not being defined at all:
Now if the compiler sees the definition for struct foo, it will also see #error, and be forced to stop translating. If it keeps translating (compiling), that means your struct was not seen.Code:#error this should be reached
struct foo { int bar; }
The struct is defined outside the MAIN_PROG.
I am wondering why the same code has been successfully compiled in AIX and is working fine. The problem is in Linux, I'm getting the compile error in Linux.
Who knows? You haven't indicated that you've tried what I've suggested. It's hard enough to debug things when you can't see code, but when you can't even tell whether what you're trying is being implemented, it becomes impossible.Quote:
Originally Posted by gerger
Again, did you provide a size for your arrays in those lines?Quote:
Originally Posted by Adak
I can't understand what those lines mean, actually.Code:extern struct COMPETITOR competitor[];
extern struct COMPETITOR competitor_sav[];
Maybe you want this instead?orCode:extern struct COMPETITOR * competitor;
extern struct COMPETITOR * competitor_sav;
It would help if you would give us a short complete example that works on AIX and not on Linux.Code:struct COMPETITOR competitor[MAX_SIZE];
struct COMPETITOR competitor_sav[MAX_SIZE];