[3C] Convert with itypes in macro

Author: john-h-kastner

out/include/jpeglib.h

@@ -268,8 +268,8 @@ typedef enum {
 /* Common fields between JPEG compression and decompression master structs. */
 
 #define jpeg_common_fields \
-  struct jpeg_error_mgr *err;   /* Error handler module */ \
-  struct jpeg_memory_mgr *mem;  /* Memory manager module */ \
+  struct jpeg_error_mgr *err : itype(_Ptr<struct jpeg_error_mgr>);   /* Error handler module */ \
+  struct jpeg_memory_mgr *mem : itype(_Ptr<struct jpeg_memory_mgr>);  /* Memory manager module */ \
   struct jpeg_progress_mgr *progress; /* Progress monitor, or NULL if none */ \
   void *client_data;            /* Available for use by application */ \
   boolean is_decompressor;      /* So common code can tell which is which */ \

out/to_ppm.c

@@ -16,7 +16,7 @@ struct my_error_mgr {
   jmp_buf setjmp_buffer;	/* for return to caller */
 };
 
-typedef struct my_error_mgr * my_error_ptr;
+typedef _Ptr<struct my_error_mgr> my_error_ptr;
 
 /*
  * Here's the routine that will replace the standard error_exit method:
@@ -26,7 +26,7 @@ METHODDEF(void)
 my_error_exit (j_common_ptr cinfo)
 {
   /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
-  my_error_ptr myerr = (my_error_ptr) cinfo->err;
+  my_error_ptr myerr = (_Ptr<struct my_error_mgr>) cinfo->err;
 
   /* Always display the message. */
   /* We could postpone this until after returning, if we chose. */