Fix radareorg#2797

alvarofe · Jun 20, 2015 · 8fbccdb · 8fbccdb
1 parent 5af8a0e
commit 8fbccdb
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;