expected primary-expression before xxx token

hi,
I got this "expected primary-expression before xxx token" error from my code

Code:

---

svm_learn_classification(_docs,_target,nb_examples,dim,&_learn_parm, &_kernel_parm,kernel_cache,_model,NULL); //error: expected primary-expression before ‘,’ token
if(kernel_cache) kernel_cache_cleanup(kernel_cache); // error: expected primary-expression before ‘)’ token // error: expected primary-expression before ‘)’ token

---

What mistake might cause the problem?
Thanks and regards!

there doesn't appear to be anything syntactically wrong with those two lines. When I get errors like that, it's usually because I forgot a closing brace or a semicolon on a previous line.

There can be a number of problems, such as some variables not existing or conflicting macros.
Hack up the code into pieces, removing variables until you get it working.
Then you'll have a better idea on what's wrong.

Any chance that one of these names is a macro that expands to nothing? kernel_cache is the prime candidate, since it's the only thing that appears on both lines.

Thanks!
kernel_cache has been defined in a library header file as a struct type name, so it better not to be used as the name of a pointer here.

Code:

---

typedef struct kernel_cache {
...
} KERNEL_CACHE;

---

A type even...
This only strengthens the belief that there should be naming rules. Different ways of naming types, variables, functions and types.