[Bug c/33076] Warning when passing a pointer to a const array to a function that expects a pointer to a non-cast one

[m-matti-a dot lehtonen at iki dot fi]

------- Comment #10 from m-matti-a dot lehtonen at iki dot fi  2007-11-20 21:53 -------
This code piece cannot compiled without warnings or errors.

/*! Presentation of transformation matrix */
typedef coordinate_t    transform_matrix_t[ 4 ][ 4 ];
...
void
  transform_concat
  (
    transform_matrix_t        transform,
    transform_matrix_t const  transform1,
    transform_matrix_t const  transform2
  );
...
void
  transform_rotate
  (
    transform_matrix_t    transform,
    real_t const          angles[ 3 ]
  )
{
  transform_matrix_t
    temp;

...
  transform_concat( transform, transform, temp );
...
}
Without casts I got two warnings:
warning: passing argument 2 of ‘transform_concat’ from incompatible
pointer type
warning: passing argument 3 of ‘transform_concat’ from incompatible
pointer type

And if arument 2 and 3 are casted as
  transform_concat( transform, (const transform_matrix_t) transform, (const
transform_matrix_t) temp );

Then I got two errors:
error: cast specifies array type
error: cast specifies array type


-- 

m-matti-a dot lehtonen at iki dot fi changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |m-matti-a dot lehtonen at
                   |                            |iki dot fi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33076