refine comments

extlib/benz/include/picconf.h

@@ -2,13 +2,13 @@
  * See Copyright Notice in picrin.h
  */
 
-/** no dependency on libc? */
+/** enable libc? */
 /* #define PIC_USE_LIBC 1 */
 
-/** use stdio or not */
+/** enable stdio */
 /* #define PIC_USE_STDIO 1 */
 
-/** enable some specific features? */
+/** enable specific features */
 /* #define PIC_USE_WRITE 1 */
 
 /** essential external functions */
@@ -16,15 +16,3 @@
 /* #define PIC_SETJMP(pic, buf) setjmp(buf) */
 /* #define PIC_LONGJMP(pic, buf, val) longjmp((buf), (val)) */
 /* #define PIC_ABORT(pic) abort() */
-
-/** initial memory size (to be dynamically extended if necessary) */
-/* #define PIC_ARENA_SIZE 1000 */
-/* #define PIC_HEAP_PAGE_SIZE 10000 */
-/* #define PIC_PAGE_REQUEST_THRESHOLD(total) ((total) * 77 / 100) */
-/* #define PIC_STACK_SIZE 1024 */
-/* #define PIC_RESCUE_SIZE 30 */
-/* #define PIC_SYM_POOL_SIZE 128 */
-/* #define PIC_IREP_SIZE 8 */
-/* #define PIC_POOL_SIZE 8 */
-/* #define PIC_SYMS_SIZE 32 */
-/* #define PIC_ISEQ_SIZE 1024 */

extlib/benz/include/picrin/setup.h

@@ -95,7 +95,7 @@ void abort(void);
 #if __STDC_VERSION__ >= 199901L
 # include <stdint.h>
 #else
-# if INT_MAX > 2147483640L      /* borrowed from luaconf.h */
+# if INT_MAX > 2147483640L      /* imported from luaconf.h */
 typedef int int32_t;
 typedef unsigned int uint32_t;
 # else
@@ -121,8 +121,6 @@ typedef unsigned long uint32_t;
 # define PIC_INLINE static
 #endif
 
-#define PIC_FALLTHROUGH ((void)0)
-
 #if defined(__cplusplus)
 # define PIC_UNUSED(v)
 #elif __GNUC__ || __clang__

extlib/benz/read.c

@@ -558,7 +558,7 @@ read_label_set(pic_state *pic, xFILE *file, int i, struct reader_control *p)
         return val;
       }
 
-      PIC_FALLTHROUGH;
+      /* fall through */
     }
   default:
     {