Compiler error during porting exercise

[Michael C]

Hi,

I am trying some porting examples to winscw and I have a question:
Why is it that the MetroWerks CodeWarrior 3.1 cannot handle the following?

in header file (pcb.h):
int      in_baddynamic (u_int16_t, u_int16_t);

in c file (pcb.c)
int
in_baddynamic (a, b)
        u_int16_t    a;
        u_int16_t    b;
{...}

CodeWarrior complains with a 'identifier redeclared' error.

Is it because the declaration is a different style to the definition?
I am not use -strict, maybe the compiler just can't handle it?

I have searched the whole tree and there is only one declaration and one 
definition.