Introducing mem_cpointer_t type for compressed pointers.

jerry-core/mem/mem-allocator.h

@@ -28,6 +28,11 @@
 #include "mem-heap.h"
 #include "mem-poolman.h"
 
+/**
+ * Compressed pointer
+ */
+typedef uint16_t mem_cpointer_t;
+
 /**
  * Representation of NULL value for compressed pointers
  */

jerry-core/mem/mem-pool.h

@@ -65,7 +65,7 @@ typedef struct __attribute__ ((aligned (MEM_ALIGNMENT))) mem_pool_state_t
   unsigned int free_chunks_number : MEM_POOL_MAX_CHUNKS_NUMBER_LOG;
 
   /** Pointer to the next pool with same chunk size */
-  unsigned int next_pool_cp : MEM_COMPRESSED_POINTER_WIDTH;
+  mem_cpointer_t next_pool_cp : MEM_COMPRESSED_POINTER_WIDTH;
 } mem_pool_state_t;
 
 extern void mem_pool_init (mem_pool_state_t *pool_p, size_t pool_size);