From 7507868d47af8a8a5ed9f3152f1d956ca910156a Mon Sep 17 00:00:00 2001
From: pancake <pancake@nopcode.org>
Date: Fri, 18 Jul 2014 18:48:11 +0200
Subject: [PATCH] Fix segfault in 'r2 -c 'dso;dso' -'

---
 libr/reg/arena.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libr/reg/arena.c b/libr/reg/arena.c
index f4d47857f7..eaaba0b3ad 100644
--- a/libr/reg/arena.c
+++ b/libr/reg/arena.c
@@ -45,7 +45,7 @@ R_API int r_reg_set_bytes(RReg *reg, int type, const ut8* buf, int len) {
 	struct r_reg_set_t *regset;
 	RRegArena *arena;
 	int off = 0;
-	if (len<0)
+	if (len<0 || !buf)
 		return R_FALSE;
 
 	if (type == -1) {
@@ -115,7 +115,7 @@ R_API int r_reg_fit_arena(RReg *reg) {
 		arena = reg->regset[i].arena;
 		newsize = 0;
 		r_list_foreach (reg->regset[i].regs, iter, r) {
-			int regsize_in_bytes = r->size / 8;
+			//int regsize_in_bytes = r->size / 8;
 			// XXX: bits2bytes doesnt seems to work fine 
 			size = BITS2BYTES (r->offset+r->size);
 			newsize = R_MAX (size, newsize);