*** ruby.h.old	2013-07-23 01:08:27.000000000 +0900
--- ruby.h	2013-07-23 23:57:01.000000000 +0900
***************
*** 1271,1276 ****
--- 1271,1279 ----
  {
  #ifdef RGENGC_LOGGING_WB_UNPROTECT
      RGENGC_LOGGING_WB_UNPROTECT(x, filename, line);
+ #else
+     (void)filename;
+     (void)line;
  #endif
  
  #if USE_RGENGC
***************
*** 1291,1296 ****
--- 1294,1303 ----
  {
  #ifdef RGENGC_LOGGING_OBJ_WRITTEN
      RGENGC_LOGGING_OBJ_WRITTEN(a, oldv, b, filename, line);
+ #else
+     (void)oldv;
+     (void)filename;
+     (void)line;
  #endif
  
  #if USE_RGENGC