Fix #2797

radareorg · Jun 20, 2015 · 80fd03f · 80fd03f
1 parent 1f21a2d
commit 80fd03f
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/libr/core/cmd_flag.c b/libr/core/cmd_flag.c
@@ -117,6 +117,12 @@ static int cmd_flag(void *data, const char *input) {
  break;
  case 'R':
  {
+ if (*str == '\0'){
+ eprintf ("Usage: fR [from] [to] ([mask])\n");
+ eprintf ("Example to relocate PIE flags on debugger:\n"
+ " > fR entry0 `dm~:1[1]`\n");
+ break;
+ }
  char *p = strchr (str+1, ' ');
  ut64 from, to, mask = 0xffff;
  int ret;