main.c:
#include <math.h>
#include "a.h"

int main(void){
 exception("math.h");
 return 0;
}

a.h:
void exception(char *string);

a.c:
#include <stdio.h>

void exception(char *string)
{
 printf("Exception: %s\n", string);
}
----------------------------------------
dmc main.c a.c
main.obj(main)
 Error 42: Symbol Undefined __exception

If math.h is included in main.c the compiler reports the above error. According to the latest C standard "exception" is not reserved word nor part of the standard math library.

David

If you look in math.h exception is defined as a struct unless you do:

#define _EXCEPTION_DEFINED


Including this define in your code fixes the problem but I'd probably choose a different name for your function.


Regards,
Phil


David Grimes wrote:

> main.c:
> #include <math.h>
> #include "a.h"
> 
> int main(void){
>  exception("math.h");
>  return 0;
> }
> 
> a.h:
> void exception(char *string);
> 
> a.c:
> #include <stdio.h>
> 
> void exception(char *string)
> {
>  printf("Exception: %s\n", string);
> }
> ----------------------------------------
> dmc main.c a.c
> main.obj(main)
>  Error 42: Symbol Undefined __exception
> 
> If math.h is included in main.c the compiler reports the above error.
> According to the latest C standard "exception" is not reserved word nor part
> of the standard math library.
> 
> David
> 
>