From bb1548011ab2c06b6b8109666aaf921ec7b07846 Mon Sep 17 00:00:00 2001
From: Keith Rothman <537074+litghost@users.noreply.github.com>
Date: Tue, 29 Jan 2019 08:35:14 -0800
Subject: [PATCH] Add frame limit to segmaker to prevent out of bound
 solutions.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
---
 prjxray/segmaker.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/prjxray/segmaker.py b/prjxray/segmaker.py
index 18c6b7f4..5fccbf57 100644
--- a/prjxray/segmaker.py
+++ b/prjxray/segmaker.py
@@ -225,12 +225,18 @@ class Segmaker:
                     bitname_frame = bit_frame - base_frame
                     bitname_bit = 32 * (
                         bit_wordidx - bitj["offset"]) + bit_bitidx
+
+                    # Skip bits above the frame limit.
+                    if bitname_frame >= bitj["frames"]:
+                        continue
+
                     # some bits are hard to de-correlate
                     # allow force dropping some bits from search space for practicality
                     if bitfilter is None or bitfilter(bitname_frame,
                                                       bitname_bit):
                         bitname = "%02d_%02d" % (bitname_frame, bitname_bit)
                         segment["bits"].add(bitname)
+
             return segment
 
         '''