I wrapped  opencv's cvError like this


;;  void cvError(int status, const char* func_name, const char* err_msg, const 
char* file_name, int line)
(cffi:defcfun ("cvError" cv-error) :void
  (status :int)
  (func-name :string)
  (err-msg :string)
  (file-name :string)
  (line :int))


but the whole purpose of the function is to cause an error in c which it does 
perfectly when i run this at the repl


(cv-error +stsoutofrange+ "SCALAR" "error" 
"/home/w/Documents/opencv-2.4.6.1/modules/calib3d/src/epnp.cpp" 1)

here is the error

OpenCV Error: One of arguments' values is out of range (bew!) in SCALAR, file 
/home/w/Documents/opencv-2.4.6.1/modules/calib3d/src/epnp.cpp, line 1
terminate called after throwing an instance of 'cv::Exception'


but the thing is it causes the error in c on the inferior-lisp buffer in emacs  
on the repl buffer the repl just hangs....how would i go about getting this 
error(above) to show up on the lisp side

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