From c55ca3695d63813db3a7a87993d3865ebe5e5cd0 Mon Sep 17 00:00:00 2001
From: Zach Riggle <riggle@google.com>
Date: Thu, 28 May 2015 16:35:20 -0400
Subject: [PATCH] Stop telescope when it makes sense

---
 pwndbg/commands/telescope.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pwndbg/commands/telescope.py b/pwndbg/commands/telescope.py
index 6bf013a74..d351a0ff0 100644
--- a/pwndbg/commands/telescope.py
+++ b/pwndbg/commands/telescope.py
@@ -57,6 +57,9 @@ def telescope(address=None, count=8, to_string=False):
     # Print everything out
     result = []
     for i,addr in enumerate(range(start, stop, step)):
+        if not pwndbg.memory.peek(addr):
+            result.append("<Could not read memory at %#x>" % addr)
+            break
         line = ' '.join(("%02x:%04x|" % (i, addr-start),
                          regs[addr].ljust(longest_regs),
                          pwndbg.chain.format(addr)))