#include <stdio.h>
#include <stdlib.h>

int main(int argc, char** argv)
{
  int r = rand() % 2;
  char *p;
  char c;
  
  scanf("%c", &c);
    
  switch (c)
  {
    case 'W':
      if (r)
        p = *argv++, --argc;
      break;
#ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
    case 'U':
      if(!p)
        goto expected_hwif_error; //ERROR
      break;
#endif /* CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF */

#ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
    case 'R':
      if(!p)
        goto expected_hwif_error;


expected_hwif_error:
  printf("expected hwif value");

#endif /* CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF */
  }
  return 0;
}

diff --git a/simple/061fd0a.c b/simple/061fd0a.c
--- a/simple/061fd0a.c
+++ b/simple/061fd0a.c
@@ -27,12 +27,11 @@
     case 'R':
       if(!p)
         goto expected_hwif_error;
-
+#endif /* CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF */
 
 expected_hwif_error:
   printf("expected hwif value");
 
-#endif /* CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF */
   }
   return 0;
 }
\ No newline at end of file

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char** argv)
{
  int r = rand() % 2;
  char *p;
  char c;
  
  scanf("%c", &c);
    
  switch (c)
  {
    case 'W':
      if (r)
        p = *argv++, --argc;
      break;
#ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
    case 'U':
      if(!p)
        goto expected_hwif_error; //ERROR
      break;
#endif /* CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF */

#ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
    case 'R':
      if(!p)
        goto expected_hwif_error;


expected_hwif_error:
  printf("expected hwif value");

#endif /* CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF */
  }
  return 0;
}

. call miscutils/hdparm.c:2534:hdparm_main(int argc, char **argv)
. ERROR [FEATURE_HDPARM_HDIO_UNREGISTER_HWIF] 2762:goto expected_hwif_error;