Question

In a header file

extern void Trace_Communication(communicationBlock_t mdbMessage);

gives error: expected ‘)’ before ‘mdbMessage’

I am sure that communicationBlock_t is in scope (and reliaze that it would be more efficient to pass a pointer)

If I copy the declaration of communicationBlock_t just before the extern offending line, the error is

error: conflicting types for ‘communicationBlock_t’  
note: previous declaration of ‘communicationBlock_t’ was here

Which seems to imply that the offending line has access to the declaration of communicationBlock_t

I guess that I am overlooking something trivial and obvious, but I have been coding all night and can no longer think straight …

What am I doing wrong? Thanks 1 ,000,000

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Update: my guess is that it’s an include file tangle …

typedef struct
{
  communicationMessage_t message;
  uint8_t                length;
#ifdef TESTING
   char                   commandName[32];    // for testing porpoises 
   DoRunTimeChecks        runTimeCheckCallback;
#endif      
} communicationBlock_t;

Answer 1

Sorry, folks. It was, as I suspected a deady embrace in #include files